When Grant's new lover Rachel demands that he stop seeing Michelle, Michelle enlists the help of a blow-up sex doll to persuade Grant to confront her and gets fired. Chris discovers that being engaged makes him a love god, but when he refuses to buy Claire a ring she finds herself slipping back into her slutty old ways.

When Michelle tries to get her old job back at Glo gym her boss Rachel relegates her to the position of towel girl, so Michelle resorts to a novel interview technique to get a job as Grant's PA. Chris takes Claire to meet his parents and discovers that they share a revolting secret.

Michelle and Grant take action to remove Grant's bullying boss, but their plan backfires when Michelle takes some drugs, and Grant dumps her. When Chris gets the clap, the disease badly affects his hair, and Claire dumps him. The dumpees, Michelle and Chris, take comfort in each other's arms.