Mini, Grace, Franky, Liv, Alo, Rich, Matty, and Nick are on holiday in Morocco--in a crumbling villa with no roof, water, or electricity. While Mini gets together with Alo (demanding that he tells nobody), Franky tells Matty that she wants to end their relationship and she's easily attracted to suave Luke, whose party they crash. She agrees to go off with him, but Liv learns from a local boy that Luke is a notorious drug dealer and has planted 6 kilos of dope in the group's truck. Liv,Grace, and Matty pursue the fleeing couple, but the van crashes. Back at the college Grace is in a coma in hospital while Matty has run away in Morocco.

Blaming the gang for what happened to Grace, her father, Professor Blood, bans her boyfriend Rich from seeing her in hospital, but he manages to sneak in and discover that she has awakened but is being moved to a hospital in Zurich. After the Bloods have left for Switzerland, Rich moves into their house and, to the near detriment of his friendship with Alo, becomes obsessive,sleeping in Grace's bed and watching her old home-movies. However, when Professor Blood comes home he tells Rich that Grace died in hospital in Zurich without recovering--Rich's recent conversation with her was only a fantasy.

Tired of Mini's inconsistent attitude and unaware of her pregnancy, Alo quickly falls for vivacious Poppy, whom he meets at a fancy-dress party; they have consensual sex in her house and escape being caught by her argumentative parents. But Alo is shocked to find that Poppy is only 13 and soon he's arrested for assaulting a minor, suspended from college, and ostracized by his former friends. AT least it brings him closer to Mini and they have a heart-to-heart. She is about to tell him that she is pregnant when Poppy rings to say that she and her mother have persuaded her father to drop the charges against him.

Mini is rushed to hospital but the baby is saved. As the exam results come through and Alex gets ready to spend his gap year in Thailand, Matty apologises to Rich for causing Grace's death. Franky heads for Birmingham to seek out her mother but is told that she is dead by her sister Clara, who returns her to Bristol. At Alex's farewell party Liv makes up with the other girls and Grace appears to Rich for one last kiss. Clara tells Franky that their mother is actually in a psychiatric hospital and takes her to visit. Nick accompanies Matty to the police station to give himself up and Mini has her baby, with Alo offering to support her. Hearing the baby cry Rich turns to the camera to say goodbye to the viewers.