12-year-old Jack Crawford is the only person who can save his dad's life. Trouble is, he's trapped thousands of miles away in a remote boarding school with a bunch of super-rich, spoiled, resentful class-mates. Bryce: Ruthless leader. Likes rules. Hates losers. Holly: Fearless Headmaster's daughter. Likes trouble. Rishi: Loves computers. Hates trouble. Sergei: Neglected billionaire's son. Loves marshmallows. Boyd: Bored Texan giant. Loves girls. ...and someone has a secret that will change Jack's life forever. With time running out, Jack must forge this bunch of misfits into The Invincibles, a crack team of daring escapologists, whip-smart cryptographers, cunning programmers and engineers. But when the clock stops ticking, will The Invincibles dare risk everything for Jack? Only by working together can The Invincibles overcome their worst fears, face a ghost, crack a secret code, unmask a traitor, evade a deadly killer, learn to talk to girls and stand up to the adults - who all refuse to believe a word Jack says.