Bunny McGarry is back – and he’d really like a nice holiday. Somewhere with hot weather and cold drinks that come with little umbrellas for reasons he never understood. A certain nun has other ideas though and instead, he finds himself dispatched to London to find Sean Malone, a runaway teenager who doesn’t know his mother hasn’t got long left to live. The only leads Bunny has are a last-known address for the deadbeat dad Sean had gone in search of, and some letters the teenager had sent to his mum, one of which included a picture of him with the current heavyweight champion of the world. It quickly emerges that Sean is caught up in some very, nasty business and Bunny, out on his own and in a city he doesn’t know, or particularly like, is his only chance at survival.