Angus and Anna's Unexpected Adventure (en Inglés) - Nancy Spaulding

What kind of mischief can two black cats get into when their owners are away?

Angus and Anna, two littermates, decide they too should take a little jaunt away from home. Since they live on an island, the path outside the gate quickly takes them to the edge of the Salish Sea. That is where everything changed. The cats find that their curiosity and independence has led them into a situation that is beyond of their control. As they experience one adventure after another the cats wonder if they will ever find their way home.