Parker and Smart bet the boys that they can't be nice for an entire day.

Joe is building a model space rocket for his school science project, and comes under suspicion when things start to go missing around the house.

Emily seeks David's help when Roger objects to her outfit for a seventies party at the local rugby club.

Worried about household security after his friend Toby is burgled, Joe pesters Roger to fit more locks and an alarm to the house.

Felicity and Robbie organise a sponsored dog walk to raise money.

Joe's academic skills are recognized with an award nomination.

Emily is unhappy at having to babysit for free and decides to go on strike. Joe signs up for martial arts classes.

Jane and Emily try to become fit together, while David becomes a fanatical vegetarian to impress Lisa.

Joe and Felicity are delighted when cousin Danny comes to stay. But who has taken Emily's diary?