The adventures of Pingu, a clever, but clumsy, young penguin. Companions include his baby sister Pinga, his best friend Robby the seal, his caring mother and his father, who is the local postman. Pingu goes fishing, claiming he'll catch a big one. He joins his friend Pingo at the fishing holes, but all Pingu reels in is junk! Meanwhile, Pingo has caught lots of fish. How will Pingu manage to catch the big fish he has promised Mother?