Charlie is elected as Head Boy following a campaign aimed at combating bullying, which sets the tone for his leadership and kindness. When he witnesses a younger student, Alfie, facing harassment, he steps in to help, demonstrating his commitment to fostering a supportive environment. Although Mr. Lange is not in favor of establishing a Pride club, Mr. Ajayi graciously offers his classroom for the cause. As students begin to gather, Alfie and others join the initiative, creating a sense of community.
Meanwhile, Nick grapples with the decision of choosing Leeds as his university of choice, feeling apprehensive about the distance that will come between him and Charlie. Struggling with how to express himself on his university application, Nick receives guidance from Charlie, who also encourages him to pursue a volunteering opportunity at a dog shelter. However, tension arises when Nick suffers a nightmare about losing Charlie, leading him to react aggressively during a night out when he perceives someone flirting with Charlie. A confrontation in a rugby match results in him sustaining injuries, highlighting the emotional turmoil he faces.
As relationships evolve, Elle and Tao decide to separate, with Elle planning to relocate to Berlin after graduation. Their friends speculate whether this is the end or if they might reconcile in the future. This sense of uncertainty affects Nick, who becomes increasingly withdrawn and believes that perhaps Charlie would be better off without him, prompting their breakup.
In the aftermath, Charlie struggles with feelings of sadness and isolation, neglecting his well-being until his friends rally around him. When Elle seeks Charlie's support during challenging times for trans rights, they attend a Pride parade and visit a gay club together, but Charlie feels discomfort upon seeing Nick with another girl. Despite both of them wanting to reconnect, they hesitate to reach out until Nick's brother, David, shares his own troubles with him, trying to offer support during this difficult time.
In a surprising encounter, Nick joins Tara, Darcy, Sahar, and Imogen at the gay club, where Imogen discovers her identity as a lesbian. Here, he crosses paths with Tao and has conversations with friends that encourage him to embrace who he is. Working at a café, Charlie observes the intimate interactions of an elderly gay couple, which leads him to reflect on the strength of relationships, even those that face challenges.
As time passes, Charlie discusses the nature of relationships with his sister, Tori, who reveals her own identity as asexual. Upon rediscovering the camera Charlie gifted him, Charlie develops the photographs Nick took of them, leaving a heartfelt note for Nick to meet him at the beach. During this reunion, they have an open conversation, rekindling their relationship and revisiting the place of their first kiss after attending prom.
In the closing moments of their story, we see Tara and Darcy embarking on an interrailing adventure, Sahar carving out a name for herself as a solo artist, and Michael celebrating his selection for the Ice Skating team for the Winter Olympic Games. Tao makes his way to Berlin to visit Elle, while Charlie eagerly travels to Leeds to see Nick, signifying growth and the enduring nature of their connection as they embrace their future together.