A young and wayward rat experiences an alarmingly different side of life when he and his family set sail for sunnier climes and come across an adventure with a Russian sea captain, his pig, sinking ships and lots more.
Forced to leave their beloved nest by a cook, a cat and the freezing cold, the Morgan Street Rats set sail for the delectable promise of peace and quiet, hot grime and stench in the Tropics. (Or so they think). But, before too long, it becomes startlingly clear that the young family of rodents are far from headed for their dream destination! And that is not the only surprise on the horizon. Little Hero is showing signs of rather unusual behaviour - he prefers the sweet taste of raisins to old fish bones, and wants to explore the more refined side of life. If he doesn't see the error of his ways soon, Hero could land himself in extremely deep water.