Bramble, Briar, and Vick unexpectedly follow a time traveller 100 years in the future, where they find Earth beset by environmental catastrophe, with humanity barely able to survive.
Briar and Bramble, who lost their mother Barbara when they were cubs, are thrown into danger when escorting a scientist, which may lead them to a family reunion.
Bear brothers Briar and Bramble set off on an adventure with their human friend Vick to Wild Land, an amusement park where humans can turn into animals using a gene-technology bracelet.
