Erin Hunter 
Warriors: Mistystar’s Omen 

In this digital original novella from the world of Erin Hunters #1 nationally bestselling Warriors series, Mistystar faces a devastating challenge in her first days as leader of River Clan, during the first two books in the Omen of the Stars series.When Leopardstar loses her ninth life, her longtime deputy, Mistyfoot, steps up to receive her new name Mistystarand lead her Clan through a troublesome time. But Mistystar is about to discover a shocking secret about River Clan, and her leadership is plunged into crisis as soon as it begins.