The Obsta-Kill Kourse

'''The cast must go through an extreme obstacle course with danger lurking around every corner. Someone becomes obsessed in stopping a great evil after seeing what they're capable of, but has a hard time convincing the rest of the cast; meanwhile, another tries to clear their name regarding an embarrassment that hurt their relationship. In the end, a hero and their ally attempt to defeat their greatest rival, but sadly, it isn't enough to prevent the flushing of a powerful manipulator.'''

Plot
On the girl's side of the loser cabin, Zoey and a distraught Courtney discuss the latter's new relationship ending because of Cameron kissing her. Zoey tries to lighten the mood by admiring Courtney for having accomplished this by not one, but two guys in one day. This makes Courtney encourage herself, but, realizing the positions are now reversed in what started her conflict with Gwen, she asks Zoey not to say anything. Zoey happily agrees. It is then that Mike, Mal still in complete control, gets her attention from the window. He tells her that Alejandro let Cameron fall down the mine, and Zoey, shocked, speculates that he rigged the votes against him two episodes ago as well. In the confessional, Mal describes eliminating Cameron as being easy as "scraping gum off his shoe - a little bit sticky, but oh so satisfying."

Inside his mind, Mike and Chester meet up with Svetlana. Both males are confused at her building fish statutes out of butter, but she explains that either she follows Mal's orders, or ceases to exist. Mike asks her to join the resistance against him, as the scene cuts back to Mal's confessional. He reveals to the viewing audience that Alejandro is his next target, for foiling his plans to frame him in the previous episode. At this point, Chris calls all contestants to the beach. On her way down the steps, Courtney comes across Scott sadly eating dirt. She yells at him that Cameron kissed her and not the other way around, and that they are back together. Scott goes along with it, but says he is not willing to forgive or forget just yet, as "her kissing spree may not be over."

The campers rush at Chris's threat to make the last one to arrive do fifty pushups. Alejandro receives this task, and although he tries to argue back that he just returned from Boney Island, Alejandro brushes it off, for exposing Mal is his biggest priority and not dealing with the sadistic host. He reveals that not only did he keep the DVD of incriminating Mal footage, he hid it somewhere in the McLean Spa Hotel for the right time. Chris explains the challenge as an "obsta-kill course" of booby-trapped tires, ropes made out of unusual material, "snapping bars," and a part called "Duck and Cover." For the second time in the season, Scott is overly confident, which pushes Chris to require the contestants to wear heavy packs throughout the entire thing. He adds that there will be a penalty for removing it at any time. Zoey talks with Gwen about Alejandro allowing her friend to fall, to which Gwen labels it has harsh for even his standards. Zoey proposes that they vote him off at the next elimination ceremony. Gwen declares herself as "in" without hesitation. Courtney sees them, and becomes paranoid that they are forming an alliance or gossiping about her kissing Cameron and Scott.

Alejandro strikes a conversation of his own with Mike. He lets him know that he is fully aware of his evil nature and that he is not who he pretends to be. Mike is unfazed, reasoning that no one will believe "the most manipulative contestant in Total Drama history." Alejandro then warns him about the DVD, to which the other crushes his hand, bringing the Spaniard to his knees. Alejandro takes his words back and reassures him that his secret is safe, though he is obviously lying. Zoey approaches and Mike covers the situation by claiming he was helping a fallen Alejandro. In the confessional, Alejandro is determined to get the other contestants on his side. The campers begin racing through the obstacle course, with Mike sticking by Zoey so he has a chance to enter the Spa Hotel and search for the DVD should she win. Alejandro tries to tell Gwen of the danger, but is knocked out by a tire Mike throws. When Mike and Zoey reach the ropes, she falls, being allergic to the material of hers - dog hair. He pushes her on, eating through the licorice his rope is made of to slow down the next person. Zoey proceeds up another rope, as Gwen climbs the one she just attempted. Zoey asks if she is allergic to dogs, and it is clarified that she isn't. Gwen learns of the dog hair and laughs with the latter about how gross it is. Courtney and Scott arrive and she shouts that Zoey better not be telling her about the kiss with Cameron. Gwen is extremely surprised. Scott adds fuel to the fire by mentioning that they were together at the time, which makes Gwen yell back that she wants to have a "little chat" with Courtney if they survive the challenge. While Courtney manages to finish climbing, Scott is unfortunate enough to be electrocuted by his rope, just as Alejandro goes to warn him about Mal. Alejandro decides to get back to Scott later, and proceeds on the licorice rope. It separates and falls to the ground, but he hangs on to the wall.

The next part is the "snapping bars," earning their name from the snapping turtles in the water below. Gwen sarcastically remarks that it's "hilarious," and Alejandro crosses the top of the bars on his hands before clinging to Mike. As Mike begins struggling, Svetlana is shown fading and in pain, revealing that he is channeling her. Mike succeeds and becomes an evil version of the Russian gymnast, swinging and banging Alejandro against the bars. Zoey is confused, recalling that Mike previously was having trouble accessing his other personalities. However, she is ultimately relieved he did not transform into the "Mal character." Inside his subconscious, the real Mike begs Svetlana to fight back, and she acknowledges the chain encircling her foot. Mike smashes it with a nearby mallet, freeing Svetlana and pulling her from Mal's control. She exclaims that she will now help Mike and Chester defeat him. Without her, Mal falls into the water and is attacked by snapping turtles. He initially is taken aback by Svetlana's exit, but quickly realizes Mike is involved and punches the confession cam. Courtney and Scott come to the bars, and again, while she does well, he lags behind. She becomes frustrated and leaves him.

Zoey is the next person Alejandro tries to inform of the threat, but he is interrupted yet again, this time by Chef shooting them with a familiar gun. Laughing, Chris explains the meaning of the name "Duck and Cover" - contestants must duck and cover from leeches. Zoey runs on, as Courtney and Gwen arrive. Courtney explains that Cameron kissed her, to which Gwen questions why. Courtney replies that maybe it was because she's "pretty," and while Gwen agrees, she states that it came out of nowhere. The scene shifts to Mike and Scott. Mike lies that it was Alejandro who made Cameron kiss Courtney instead of Mal himself, and Scott leaves to speak to Courtney. As he walks, his pack catches on a bush and he eventually ditches it, concluding that he will deal with the penalty when he wins. Gwen makes a fast retreat when he joins them. It is during this chat that Courtney admits she also kissed Alejandro "years ago" while she and Scott weren't together. Mike approaches them asking for their loyalty in voting off Alejandro, and they say yes. There is even more negative interaction between Alejandro and Mike in this scene, during which Mike plays a lethal card in calling him "Al."

The next part of the challenge is zip lining to a finish line where Chris stands. Alejandro is ecstatic, having much experience, and screams Mal's name as he launches from the cliff. Zoey reasons that she must keep an eye on Mike after this. When he urges her to come with him, for the weight will make them faster, she compliments him by saying he "sounds like Cameron." As they come close to Alejandro, Mike hangs from his legs, which makes them both drop into the water below. Scott, Gwen, and Courtney are the last to reach this part of the challenge. With Scott lacking the necessary equipment, Chris laughs that this was the penalty he was talking about, and Scott is forced to proceed using only his hands. Courtney and Gwen start to zip, as Zoey crosses the finish line and wins immunity. The challenge is over, and only the girls have succeeded in finishing the course while the guys are each caught in tough situations.

At the elimination ceremony, Zoey, Gwen, Courtney, and Scott all go keep their promises to vote off Alejandro. Mike does as well. Alejandro, on the other hand, not only votes for Mike, but creatively submits his selection by scribbling on his photo so he resembles a devil. Scott is highly amused and wishes he had thought of it. Chris asks Zoey who she would like to join her in the Spa Hotel with Gwen and himself, and Gwen immediately cuts in that she cannot tolerate another night with him there. In response, Chris sends her on exile to Boney Island for the night, which Gwen is visibly not pleased by. Zoey invites Mike to stay with her, and they share a hug. Alejandro is flushed, but before his exit is complete, he proclaims that there is a greater villain at work and that "the truth is in the art." Zoey wonders what he means before Chris signs off.

Cast

 * Chef appears; however, he had no lines, though he was heard laughing during Chris's recap.

General

 * This is the first episode in the season where a female is exiled to Boney Island, and the first time one of the original twenty-two campers from Total Drama Island is exiled.
 * This is the first episode in the season where the main antagonist causes an elimination.
 * As of this episode, both contestants who debuted in Total Drama World Tour have been eliminated.
 * With this, every contestant in Total Drama history has been eliminated at least once, counting Alejandro's ending in Total Drama World Tour.
 * With Alejandro's elimination, no males from the first generation are left in the competition.
 * Additionally, Gwen is the last camper left in the season who was previously a season finalist.
 * It is revealed in this episode that Alejandro and Courtney kissed sometime during Total Drama World Tour.
 * This is the last episode of the season where a contestant is exiled to Boney Island.

Continuity

 * This is the first episode since Food Fright where a contestant is eliminated by being voted off.
 * This is the first episode since Evil Dread where Mike accesses one of his personalities. In this case, Mal transforms into Svetlana.
 * This episode marks the first time Alejandro has ever been voted off, and the first time he has been eliminated in Canada.
 * With Alejandro's elimination, this marks the first time since Chinese Fake-Out where there are more females in the competition than males.
 * Scott and Courtney get back together in this episode after having broken up in the previous episode.
 * This marks the third episode where the editor humiliates Chris during the recap. The first and second was during the recap of Eat, Puke and Be Wary and The Enchanted Franken-Forest.
 * The drawing Alejandro did on Mike's picture was similar to what Heather did on Eva's picture in No Pain, No Game.
 * Alejandro's line before his flush, "this show just got 100% less beautiful", mirrors Justin's line at his elimination in The Princess Pride.

Goofs

 * The bruises that Alejandro had after Mal injures him are missing after his confessional.
 * Alejandro's last name, Burromuerto, is constantly referenced as Burrosmuertos throughout the episode.
 * Mal's bruises were missing after the snapping turtle pond obstacle course.
 * Despite Mal breaking the confessional camera, Mal, Alejandro, Scott and Zoey were still be able to use it later.
 * Alejandro and Mike's backpacks seem to disappear and reappear in a few scenes.
 * While climbing the rope, Alejandro appears to have five fingers on one of his hands for a few frames.
 * When Chris is explaining the challenges, there are sixty tires on the ground; however, there are more when the contestants are running through them.