Dads leave home all the time. It's not that unusual, really. Jack's dad ran off with another woman. So did Mo's. But Archie's? That's a different story – a story that Archie must keep to himself. If Tia found out, let alone his mates, his life would be over.

But other people are guarding much deeper secrets of their own, secrets that will change the course of Archie's days for ever ...