A group of students arrange a sponsored 24-hour fast to raise money for charity. Two of the students, Charlie and Holly, brag that they could carry on, and in refusing to back down they end up embarking on a dangerous fast that lasts for days. The national media picks up the story, setting up a donations hotline and spurring the two on until a story breaks that threatens to ruin everything. Played out entirely through chats in the school canteen, the script relies on the realistic and often hilarious dialogue that is David Grant's trademark.