Carl drags Eddie along on an ice fishing trip to Lake Wannamuck. Tempers are already on thin ice between the two Winslow men, and their patience grows even shorter when Urkel shows up (and promptly becomes an ace at fishing). But the nerd saves the day when Carl falls through the ice, making a shaken Eddie realize that he easily might no longer have had a father to argue with had things turned out differently. Meanwhile, Judy is upset that Richie is being lavished with attention.