Henry's unhappy life changes for the worse when his dog Rex kills a duckling. In his attempt to hide the evidence, Henry tumbles into the river hitting his head and losing consciousness. After Henry wakes up, he discovers he has a new identity - that of a duck. A mother duck named Gemma mistakes him for her missing chick, the chick Rex killed. When Henry insists he's acutally a human, the ducks and swans decide he's insane.