Dani and Max are accused of wasting so much electricity because they leave things on all the time when they're not using them. Sam tries to help reduce their carbon footprint by turning off the lights, the televisions and the heating. However, Max is able to make a profit out of it by convincing Toby to buy his TV vouchers for a fiver. In the end, everybody contributes to Sam's scheme which ultimately convinces Dani to help the planet.