The Trees. They arrived in the night: wrenching through the ground and turning Adrien's suburban street into a shadowy forest. It is soon apparent that no help is coming and that these trees, which seem the work of centuries rather than hours, span far beyond the town. As far, perhaps, as the coast, where across the sea in Ireland, Adrien's wife is away on a business trip and there is no way of knowing whether she is alive. When Adrien meets Hannah, who believes that the trees may signal renewal rather than destruction and Seb, her technology-obsessed son, they persuade him to join them. Together, they set out on a quest to find Hannah's forester brother and Adrien's wife --- and to discover just how deep the forest goes.