Total Drama returns with a new host. Four characters return while 32 new characters join them. They are paired off into 18 teams and must start the race around the world to win C$1 million.

The eighteen teams all travel to the first country, Morocco. The challenge is to carry multiple spices across the desert in camels and eat them in a restaurant. Carrie and Devin win when they reach the first Chill Zone first. Leonard and Tammy come in last place and become the first team eliminated.

The seventeen teams all travel to back to Europe to visit Paris. They all go to the Eiffel Tower first, eat cheese wheels, and finally travel to the Louvre. The police cadets win first while the tennis rivals get last place due to difficulties. Owen and Noah are barely saved after a 20 minute penalty.

The sixteen teams now travel south to the Mediterranean Sea. The challenge is to swim with sharks and race on speedboats. The ice dancers prove themselves worthy and win once again. The geniuses, however lose and are the third team eliminated.

The fifteen teams now travel to Iceland. They first speak to a goose lady in a foreign language and then either eat BBQ dinner or look for fossils in a cave. The goths surprisingly win, and the vegans get last place, but since this is a non-elimination leg, they were spared for another episode, but with a penalty.

The fifteen teams remain and all travel South to Brazil. They all explore the jungle and prepare to participate in Carnivale. Jacques and Josee receive first place once again, but the penalty for the vegans was so severe that it set their same fate again, despite them winning.

The fourteen teams now travel to Transylvania in Romania. The challenge is to transport themselves in coffins and then ride horses. The ice dancers win like always, while Owen and Noah come in second. The goths were almost out, but thanks to Tom and Jen being super slow, they were eliminated instead.

The remaining 13 teams all travel to Hawaii now where the challenge is to surf and then climb a volcano. In there the ice skaters lose their luck while the sisters get into a fight. The surfer dudes win and the daters come last place, but they are declared safe as this was not an elimination leg.

The 13 teams still stand and they all go to the UAE in Dubai. The challenge is to climb the tallest tower in the world, the Burj Khalifa. The sisters win the challenge and because Emma and Noah start a relationship, the winning team helps Owen and Noah get second place. In the end, Kelly and Taylor argue too much so the mom has enough and forces them to lose.

The twelve teams now travel to China to see the Olympic stadium, eat local delicacy, and finally run the Great Wall. The daters win the challenge while Noah and Emma's alliance helps both teams win second. The rockers receive last place but are spared due to it being a non-elimination leg.

The twelve recurring teams travel to Finland and must enter a sauna chamber and then play guitar in a rock band. The rockers despite them losing last episode obviously win this challenge due to their talent so the least talented adversity twins are the ones who get last place and are eliminated.

The eleven teams now travel back to Africa for another desert challenge. Meanwhile, the ice dancers travel back to Hawaii on their own plane in order to break a curse. The police cadets win and the ice dancers get last place after arriving very late, but are lucky since there was no elimination.

The still standing eleven teams all go to prison and must escape. The ice dancers and police cadets each get a U-Turn and use it on themselves to lose. Carrie and Devin win the free call, and Shelley breaks up with him for her tennis instructor.. The stepbrothers start to get along and there is no elimination.

The eleven teams stay in Australia for a bunny hunt challenge. The ice dancers paint a bunny to fool the police cadets. The teams then fly their own planes to New Zealand. The ice dancers win again, but the rockers and stepbrothers receive last place, causing both teams to be eliminated, as it's a double elimination challenge.

The ten teams start off in New Zealand and all catch a train to either jump off a bridge or dance with tattooed guys. Jacques and Josee swiftly zoom into first place while Owen and Noah are too distracted by the sisters, making them lose. However, this challenge is a non-elimination leg.

The ten teams now all go back to Canada's Wild West for a bean eating challenge and bull riding. Noah and Emma finally get back together while Jacques and Josee lose their lead due to revenge from the cadets. In the end, the surfer dudes master all of the challenges and win the race. The father and son get last place thanks to father having jinxed them.

The eight remaining teams travel to the Arctic Circle where they must play ring toss on narwhal horns and then build an igloo. The surfer dudes do better under the pressure of the Ice Dancers' mind games and win again. The haters lose after using Stephanie uses a U-turn on themselves, but it was a non elimination leg.

The eight teams travel to Flores, Indonesia where they must collect Komodo Dragon venom for their first challenge, and then they must find a quilt with the Ridonculous Race logo on it. In the end, the Reality TV Pros are eliminated after failing to complete the last challenge of the round.

The seven teams must travel to Las Vegas, Nevada and either ride Dune Buggies and collect three flags in under a minute, or perform a magic trick in front of a magician. The best friends reach the chill zone last, but are not eliminated because it's a non elimination leg.

The seven teams fly to Mexico where they must eat spicy peppers to determine which height they will jump from on a cliff to get the next travel tip. Then they must ride burros to the carpet of completion. The goths come in last and are eliminated.

The six remaining teams travel to Vietnam and are merged into temporarily into two super-teams. The team consisting of the ice dancers (called the Axis of Evil) argue and almost lose the challenge until they find the special fish that allows them to skip the next challenge. The other super-team must do the other challenge. In the end, Geoff and Brody are eliminated after sacrificing their win so Carrie and Devin won't be eliminated.

The Final 5 teams are now separated again and race off against each other in Russia. Meanwhile, Carrie and Devin finally feel their love for each other while the ice dancers cheat for the lead, and even with a major penalty, they still win. There is no elimination in this leg.

The Final 5 teams are split back into their teams of two again and race off against each other in Russia. Meanwhile, Carrie and Devin finally feel their love for each other while the ice dancers cheat for the lead, and even with a major penalty, they still win by a wide margin. This was a non-elimination leg of the competition.

The Final 4 teams now travel to Buenos Aires in Argentina for a Tango dancing challenge. Jacques and Josee continue to cheat, but are not given a penalty, giving them the win.. Later on, Carrie and Devin finally share their first kiss, and get third place, but all does not end well as Devin is then pushed off a cliff by an emu and gets seriously injured. Carrie and Devin are unable to continue with the race, so they pick Geoff and Brody to return and take their place. The sisters get last place, but are not eliminated due to this being a non-elimination leg of the race.

The Final 4 teams travel to the Bahamas where they must first find a Ridonculous Race Map which will lead the way during a under sea challenge to find gold coins. However they don't have much oxygen while doing this. Josee gets scared and is down to 2% of oxygen midway. Mcarther then helps her get to surface. Kitty gets stuck in rocks and must hold her breath to escape. Geoff and Brody make it in first place. The Cadets, Ice Dancers, and sisters then are in a foot race to the finish. Josee then hits Mcarthur with a coconut and they get 2nd. The cadets take 3rd and the sisters are eliminated. The final 3 teams then immediately make their way to New York City.

The final 3 teams compete in New York for the ultimate prize - $1,000,000.