When young Wawae – the seaborn son of a whaling captain – is thrown overboard and swallowed whole by a whale, he knows his father will relentlessly pursue revenge against the creature that stole away his boy. What he didn’t expect, however, is what he’s about to find inside: the town of “Whalesville” – a colorful, cobbled-together village inhabited by an astounding collection of talking sea creatures, including a crab named Caleb, an angler fish called Angela, and a seadragon that prefers to go by Lilly. But, to Wawae’s new friends, Whalesville isn’t just their home, it’s the whole world – and they don't understand the danger that now pursues them from above the waves or that they are even inside a whale at all. To rescue his new best buddies, Wawae will have to convince them of the truth…and save Whalesville before his own father sends them sinking into the inky depths forever.