Mia is offered a modeling job in Paris and Peter plans to go with her. The new kid, Declan, hear them talking and tells Mia his mom knows some people and is having a party, she should come, so she takes Peter. At the party Peter feels out of place and starts doing meth with a girl and becomes addicted. There is also a new girl in 9th grade, Jenna, who starts to hang out with Clare, which makes Alli jealous.
Alli feels like her relationship with Johnny is getting boring so she spices things up by texting him racy naked pictures of herself. But when Alli angers Johnny by revealing one of his deepest secrets, Johnny takes vicious revenge by sending the pictures to the entire school. Fiona and Riley warm up to the idea of being a couple but will Riley's past cool their chemistry?
Jane has no clue what to do when she finds herself attracted to the new guy in school when she is supposed to be head over heels for Spinner. KC finally gets the chance to show his stuff on the basketball court but makes a big mistake that sends his coach into a rage. Could this be the end of KC's days on the court?
Alli and Johnny have broken up for good but when Johnny urgently wants to talk to her, could it lead to a make-up or even more heartbreak? Peter wants to get back in the band but is depressed when his efforts are too late.
Riley tries to seduce Fiona to prove he's straight but gives up when he realizes how unfair it is to manipulate Fiona's emotions. Sav is confused by Anya's new interest in role-playing games and Dave doesn't get the reaction he hoped for when he admits his feelings to Jenna.
KC follows Coach Carson's advice and dumps Clare in favor of Jenna. But what are Coach Carson's motives for butting in on his students' private lives? Could he be up to something sinister? Meanwhile, Marco returns to the halls of Degrassi as a student teacher.
Kelly and Emma stop in Degrassi during their cross-country bike tour. Emma isn't exactly happy to be home because it means telling her family she has failed out of Smithdale and plans to drop out. Chante and Danny go on their first date.
Sav doesn't have the courage to stand up to his parents and lets his arranged wife drive a wedge between him and Anya. Anya is not so willing to give up and takes drastic actions that could change her life, as well as Sav's, forever.
Riley has tried so hard to hide his true feelings but a crush on a cute new friend might force him to embrace his sexuality. KC pleads for Clare's forgiveness and wants to get back together. But has Clare already moved on?
Holly J and Declan take the next step in their relationship but Holly J might be left heartbroken when Declan can't bring himself to say "the L word". Furthering the uncertainty of their relationship, Declan admits he plans to move to New York with Fiona.