Mod. To prepare for the weekend, the pals try to buy some recreational drugs from London gangster Harry North (John Bindon), but are cheated with fake pills. After vandalising the drug-seller's car in retaliation, they desperately rob a pharmacy, finding a large quantity of their favourite "blues". After an early morning group ride from London to the south coast, the friends gather on the seafront, where Jimmy first sees a flamboyant scooter-riding Mod he describes as Ace Face (Sting). Later in a dance hall, Jimmy suggests that he will help Steph, whose escort is now chatting to an attractive American girl, to dance with Ace Face, but on the dance floor ushers her away to dance with himself. Steph leaves Jimmy to dance with Ace Face, whereupon Jimmy plots to gain attention by climbing up on to the balcony-edge and dancing with much applause, annoying Ace Face. After diving into the audience, Jimmy is ejected by bouncers. Steph's escort leaves with the American girl, and once again Jimmy tries to get with Steph, this time for the night, but she has arranged accommodation with a female friend. The lads spend the night sleeping rough, meet up at a cafe on the following morning, then proceed along the promenade, where a series of running battles ensue. As the police corner the rioters, Jimmy escapes down an alleyway with Steph, and they have sex. When the pair emerge, they find themselves amidst the melee just as police are detaining rioters. Jimmy is arrested and detained with the volatile Ace Face. When fined a hefty £75——Ace Face mocks the magistrate (John Phillips) by offering to pay on the spot with a cheque, impressing the fellow Mods. Back in London, Jimmy becomes severely depressed. His mother throws him out after finding his stash of amphetamine pills. He then quits his job, spends his severance package on more pills, and learns that Steph is now his friend Dave's girlfriend. After briefly fighting with Dave, the following morning his rejection is confirmed by Steph, and his beloved Lambretta scooter is accidentally damaged in a crash involving a Royal Mail parcel van. Jimmy takes a train back to Brighton, taking increasing levels of pills and becoming more emotionally unstable. Attempting to relive the recent excitement, he revisits the scenes of the riots and his encounter with Steph. Then, Jimmy horrifyingly discovers that his idol, Ace Face, has