Cal Innes is fresh out of prison and ducking a past muddied with ties to local gang lord "Uncle" Morris Tiernan. But when Tiernan finds out Innes is working as an unlicensed PI and calls in a favor Innes doesn't owe, Innes is thrust into a cat-and-mouse game with Tiernan's psychotic son, Mo. Ordered to track down a rogue casino dealer who's absconded with a hefty chunk of cash, Innes finds that the case points north to Newcastle. With Tiernan's son on his tail and a Manchester cop determined to put Innes back in jail, Saturday's child has to work hard to keep living.