With their first child on the way, Sally and Gordon are looking for their forever home, and they think they've found it in 44 North Drive. It needs some work, sure. Walls are crumbling, carpets are rotten, and the plumbing is leaky. But it's the large overgrown garden that excites them most. Though there is that weird sign on the gate: 'Beware of the garden'.

When Gordon decides to start work out there, he takes his first step from patio to lawn...and everything changes. He discovers that their garden is much bigger than it seems. There are things out there in the undergrowth. And as the boom of distant footsteps approach, he starts to fear he'll never make it back home.
There's an eternal conflict being fought...and to decide what part he plays, he has to venture into the wild green yonder.