Mark has crippling doubts about being engaged to Sophie; Johnson (Paterson Joseph) tries to bribe Jeremy into letting him sleep with Big Suze; and Mark joins a gym to give himself an excuse to spend as much time away from Sophie as possible.
Mark and Sophie are engaged to be married, but the groom-to-be keeps having crippling doubts. He is invited to his prospective in-laws' house for Sophie's birthday weekend, but stupidly takes along Jeremy, who ends up in bed with a member of the family. Robert Webb and David Mitchell star.
Jeremy meets his hero - techno musician Russell `The Orgazoid' - and ends up working as his handyman. However, the job seems to consist of making smoothies and swimming in his employer's pool - sparking speculation over the star's intentions. Mark goes to a school reunion and considers embarking on an illicit affair.
Jeremy organises Mark's stag weekend, which sees them set sail on a canal boat. The voyage seems to be a complete washout until a girl arrives to spice things up. Meanwhile, the groom-to-be gets offered an exciting job in India, providing a possible way out of his impending marriage to Sophie.
Mark and Sophie's big day arrives, but as the groom makes his way to the church with best man Jeremy and a very hung-over Super Hans, he continues to wrestle with crippling doubts that threaten to throw the event into disarray. Starring David Mitchell and Robert Webb.