It's Will's birthday and everyone is in the mood for a happy birthday celebration, although Will is a bit hesitant because he has never had a happy birthday. Now that he is in a good relationship with his new boyfriend Vince, Will decides to give his birthday a chance. Grace runs into Vince shopping and notices that he has bought Will a key chain -- in the hopes of giving Will the key to his heart or apartment. Meanwhile, Jack and Karen commission an artist to draw Will naked for his birthday. Karen also learns that she is not quite over Stan when Rosario serenades Will with one of Stan's favorite songs.