As Nick (Kit Connor) and Charlie (Joe Rourke) deal with their new relationship, Tara (Corina Brown) and Darcy (Kizz Egger) face revelationsUnexpected challenges, while Xu Tao (played by Gao Xin) and Al (played by Yasmine Finney) are faced with a situation of more than friendship but not enough love.With big exams looming, a field trip to Paris, and prom on the horizon, the group has a lot going for them as they navigate the next phase of life, love, and friendship.

As Nick and Charlie's relationship matures, Nick faces coming out to people outside his circle of friends, which turns out to be much more difficult than expected.During a sleepover with Charlie's friends, he gradually comes out to Imogen, who admits she already knew.Al and Xu Tao face uncertainty in building a relationship, but Xu Tao is determined about it.Charlie rejoins Chu Han's football team and opens up to his parents about his relationship with Nick; however, Charlie's father prohibits Nick from coming over to prevent any intimacy.Charlie also vowed to be there for Nick during his coming-out process.

Seeing Charlie's grades slip, his parents become more strict and forbid him from visiting Nick until he improves his grades and completes a paper.When Al visits Lambert School of Art and makes new friends, Xu Tao begins to feel alienated and jealous of Al.His mother encourages him to try to remain friends with her, and he admits to Charlie and Isaac that he likes Al.Nick's brother David returns from college and disapproves of Nick and Charlie's relationship.Nick becomes increasingly concerned about Imogen's relationship with Ben, but still insists on telling her why she should stay away from him.

Charlie completed his thesis and inspired Nick to sit for his General Certificate of Secondary Education exams, which he succeeded.Nick tries to come out to several teammates at a campfire party, but is constantly interrupted by Harry.Realizing the pressure on Nick, Charlie advises Nick not to come out first.After studying how to impress a crush, Xu Tao asks Al out, and she accepts.After a failed date, Xu Tao becomes jealous of Al's growing closeness to her new friend from Lambert, then blames herself for seemingly ruining everything.

As students travel to Paris for outdoor teaching, Nick and Charlie try to hide their relationship.Charlie, Nick, Xu Tao and Isaac were assigned to the same hotel room, while Tara, Darcy, Al and another student named Sahar Zahid were assigned to another room in the hotel.Al and Xu Tao rekindled their relationship at the museum and reluctantly decided to remain friends, with Xu Tao apologizing for his outburst.Charlie and Tara talk about their struggles with their respective partners.Imogen stands up to Ben for ignoring her, and they eventually break up, with Nick and Charlie comforting her.

Nick caused gossip among the other students when he placed a hickey on Charlie's neck while they were making out.Charlie forgives Xu Tao for his past behavior that inadvertently led to him being forced to come out, and challenges his pessimistic attitude toward him and Al.Later, while spending time together, Al kissed Xu Tao, and Xu Tao kissed her back.After Charlie passes out, he admits to Nick that he has an eating disorder.Tara confronts Darcy when she says she loves Darcy, but Darcy doesn't respond.

Nick introduces Charlie to his father Stéphane, who works in France, and the latter reveals his plans to visit the UK.As an apology, Darcy throws a party in Tara's room on her birthday.James McEwan, a classmate who had a crush on Isaac, kissed him, but Isaac had no interest.Harry apologizes to Charlie for his past bullying behavior, but Charlie refuses this apology.In a game of truth or dare, Nick reveals his sexual orientation.After the party, Darcy tells Tara she loves her.Meanwhile, Mr. Ajayi, the supervising teacher, and Mr. Farooq develop feelings for each other and kiss.They and the students went home the next day.

Al is accepted by Lambert; Xu Tao says he has overcome his jealousy, and Al says she is still undecided about Lambert.Isaac confesses to James that he is asexual.Before leaving Trum, Ben apologizes to Charlie and asks him to forgive him for his past actions, but Charlie refuses, stating that Ben's apology was simply a request for self-validation.Nick invites Charlie to dinner, where his family is also present, and the atmosphere becomes tense.At dinner, Nick confronts David about his bullying behavior and his father's cold attitude.Nick admits that Charlie is his boyfriend.His father apologizes and says he likes Charlie, and returns to Paris.Darcy gets into an argument with her homophobic mother and leaves the house.

Al accepted Xu Tao's confession and became his girlfriend officially.At the dance, everyone is present but Darcy is nowhere to be seen, while Isaac and Charlie's sister Dolly struggle to blend in.Al told Xu Tao that she decided to go to Lambert.Imogen and Sahar seem to like each other.Sleeping in the park, Darcy opens up to Tara, who tells her she loves her.Meanwhile, Nick asks Charlie to open up to him.Charlie spoke to Nick about his homophobic self-hatred and his past experiences with self-harm, including cutting himself.Nick vows to always help Charlie.