在这部人鱼的童话3家庭/冒险/剧情片中,鲸鱼威利回到了属于自己的家园，而杰西（杰森·詹姆斯·里希特 Jason James Richter 饰）亦已经长大，成为了一名海岸科考队队员，可是，他们之间的故事并没有完结。男孩麦克斯（Vincent Berry 饰）的父亲约翰（帕特里克·基尔帕特里克 Patrick Kilpatrick 饰）是一名非法捕鲸手，有时候，当他穿梭在惊涛骇浪之中追随着鲸鱼的身影之时，会将麦克斯带在身边，这令麦克斯对鲸鱼的感情十分矛盾。 一次捕鲸行动中，麦克斯和父亲闯入了威利的领地，处境十分危急，在生死攸关的紧要关头，杰西出现化解了危机。这场意外令麦克斯逐渐了解了父亲所作所为带来的危害，可是约翰依旧我行我素。又一次，约翰在行动中落入海中生死垂危，威利不计前嫌挺身而出，救下了约翰。©豆瓣
Willy the whale is back, this time threatened by illegal whalers making money off sushi. Jesse, now 16, has taken a job on an orca-researching ship, along with old friend Randolph and a sarcastic scientist, Drew. On the whaler's ship is captain John Wesley and his son, Max, who isn't really pleased about his father's job, but doesn't have the gut to say so. Along the way, Willy reunites with Jesse, who helps Max realize that whales are a little more than just cheese burgers.
