Drew plays a practical joke on Stu, where he unwittingly hurt Grandpa with his newest invention, a robotic bee. This inspires Angelica to play a practical joke of her own on the Rugrats, setting it up so that they would think that Dil pulled these jokes. All this goes on while the Rugrats play a King Arthur adventure.

The Rugrats are at a craft & antique fair, where Didi is selling her ""Bird Homes"" -- artistic bird houses that she made. However, she hadn't made any money, or as so much as a glance from someone walking by, due to her competition. Meanwhile, Grandpa sits down on an antique rocker to tell a story to the Rugrats; naturally, he falls asleep. The rocker is up for auction, but with Grandpa still in the rocker, the Rugrats though that it was Grandpa who's up for auction, so they find a way to buy him back.