Castaway on an uninhabited island, Abel, a very civilized mouse, finds his resourcefulness and endurance tested to the limit as he struggles to survive and return to his home.

"If you ask Delphinia Baker, she'd tell you she has all the family she needs. Sure, her mom passed away when she was young, her dad is often away on deployment, but even though Del has never had anyone she can call her people, she has always had her grandmother-and that's enough. Besides, having no roots just makes it that much easier when you have to move again. All of that changes, though, when Gramma falls ill and Del is sent to stay with her great-grandmother....