A female duck with six eggs watches five of them hatch, but the sixth is late to hatch - it hatches while Mama and her new ducklings swim in the lake. The sixth duckling can't swim, so he goes to Jerry, who helps him learn to swim. Tom has devious plans - catch the duckling and cook him so he can have something to eat. 在一个郊外宁静的早晨，芦苇环绕的池塘边，鸭子妈妈怀着无限的渴望与喜悦注视着窝中的六枚鸭蛋。少顷，鸭蛋一个接一个动了起来，毛茸茸的小黄鸭接连破壳而出。鸭妈妈非常高兴，迫不及待领着刚来到世间的小家伙们去池塘戏水，却没注意有一只小家伙姗姗来迟。这只小家伙忙不迭追上妈妈和兄弟们，但他突然发现，自己竟然不会凫水！眼见得家人越游越远，小黄鸭放声大哭。哭声惊动了住在附近的小老鼠杰瑞，他热心地帮小黄鸭凫水，只是收效甚微。绝望的小家伙在林间独自徘徊，不知不觉竟走进汤姆的煮饭罐里。 一场争夺小黄鸭的战争就此拉开序幕……
