Welcome to the world of the petty Dublin criminal. There's Massive, Mags, the Byrne brothers and then there's Cal, a small-time crook who always has time to help the elderly even when he's robbing the local post office. Cal's number one fan is his young son David, who's following in his father's footsteps, to the great dismay of his mum. The principal of his school is looking for a reason to expel him, the guards are on his trail, and a rival gang want his luminous sneakers. When they all meet up in the principal's office, something has to give.