Readers can decide what happens in the plot by choosing different paths as they are presented, in this story about a time machine rin amok.

When polar bear cub Kallik and her brother Taqqiq wander away from their mother, they discover startling new things about life in the wild, and make a new friend, whose life may be in danger.

Leafstar, having escaped from the Twoleg's home with the help of Billystorm and her Clanmates, finds more trouble when Sol joins the ranks of the SkyClan and his actions bring about a disaster, leaving Leafstar to decide if trusting a stranger in her ranks is worth risking the clan's future.