Arnold decides to come out to his parents at his upcoming birthday party but first discusses it with Josh, Tom, and Claire. Mae reveals a secret which Alan reacts very badly towards. Meanwhile, Rose and Hannah go out for a night of fun.

Josh, Tom, and Hannah head to Arnold's to celebrate his birthday plus support him when he comes out to his family. The party guests encounter awkward conversations and situations while Alan reflects on his current life.

Josh, Tom and Arnold have a night to remember as they experiment with drugs, head to a nightclub, meet the intriguing Ella and end up spending a long and surprising night in hospital.

Claire brings her problems with her as she returns, Josh and Arnold discuss monogamy while Tom becomes more enamored with Ella. Hannah is irritated with Stuart and Josh comes to a grim decision about Adele the rooster's fate.

Arnold attempts reconciliation with his dad, Tom fears his dental visit and Clare proceeds with her pregnancy termination with Josh by her side. Rose is angry with Stuart while Tom tries to cheer everyone up with "Johnzilla"'s help.

Tom creates a pinata filled with secrets that he, Josh, and Clare take turns reading. With Arnold away, Josh decides to explore the benefits of an open relationship by inviting a man named Ben, leading to a night of revelations.

Josh agrees to visit Ben in hospital before his brain surgery, but keeps it a secret from Arnold. Tom discovers he has chlamydia and goes to ridiculous lengths to try and treat Ella without losing her.

Josh is indecisive about visiting Ben in the hospital but follows through. Ella has the idea of taking a Ferris wheel observation but when stuck in the air the secrets of Clare, Josh, and Tom come out, hurting Arnold and Ella.

Josh goes all out and hosts Christmas dinner for his parents and his friends. When a few things go awry everyone's flaws come to the forefront and the meal ends with Arnold leaving. Josh heads to the park with just John and a trifle.