Mitchell stumbles across an old, abandoned, blocked-off classroom whilst hiding from his teachers. Finding it is haunted by ghosts eager to work, he establishes a homework service.

Mitchell stumbles on an unused classroom that is occupied by the ghostly figures of students from the past, all eager to do any work they are set.

Being a crafty young entrepreneur, Mitchell soon puts the ghosts to work, creating a homework service. But it begins to unravel when Mitchell, Becky and Templeton realise the ghost students are actually underachievers placed in a form of eternal detention and the work they've been doing is a bit shoddy.

Can the trio free these poor ghosts from their eternal detention while avoiding it themselves? Will these ghostly troublemakers get free and wreak havoc in the school? Will Mitchell ever hand a project in on time?