Steve invents some musically-activated gunpowder, but Myra mistakes it for pepper when she uses it to prepare a big dinner for Carl's commissioner!

Carl learns his wayward brother Frank is in trouble with the law.

When Commissioner Geiss and Carl go on a duck-hunting excursion, Urkel shows up at the lake with a camera to ""shoot"" the ducks. Urkel is shocked and dismayed to discover that Geiss and Carl are actually trying to slaughter innocent feathered fowl. Meanwhile, Kelly ""borrows"" her mom's diamond earrings for a hot night out at the Sizzle Club and comes home an earring short.

Unbeknown to Urkel, Laura has given him Eddie's Little Black Book to use as an invitation list to Eddie's 21st birthday party, and all of ex-girlfriends show up. While Eddie isn't having a happy birthday party surrounded by his exes, Carl is promoted to police captain after proving to Commissioner Geiss that he is the one qualified for the job, which Geiss had initially given to his son.

Everyone duck! Urkel begins training to become a master teppanyaki chef at a Japanese steakhouse a part of his journey along the self-improvement highway. Laura surprises Urkel at the restaurant while he's slicing and dicing, and he lives up to the specialty of the house - The Tsunami Supreme. Meanwhile, Commissioner Geiss goes on vacation and leaves his talking pet parrot, Andre, in Carl's care and the bird learns some new words: ""Geiss is an idiot.""

The first of a two-part series finale sends Urkel into space, which means he'll have to postpone his marriage to Laura.

In the conclusion of the series finale, astro-nerd Urkel's life hangs in the balance when he takes a dangerous walk in space to patch the damaged spacecraft.