The Ricardos and the Mertzes come back from seeing a Scottish themed show. Lucy wants to go to Scotland to look up her family ancestry. Ricky refuses. She says her great great grandfather is Angus McGillicuddy who lived in Kildoonan. After arguing everyone goes to bed.
Lucy dreams that she's arrived at Kildoonan. They Mayor says to the town that there isn't a McGillicuddy to feed to the two headed dragon. Everyone is scared. Then Lucy enters the town and explains who she is. The town rejoices. As proof she needs to perform a sword dance. After watched two dancers perform the dance it's Lucy's turn. As usual she goofs but the town accepts her anyway. Caught up in a song Lucy agrees to die for the town but then she realizes what she's said. They lead her to the inn so that she can be fattened up.
Scotty MacCardo (Ricky) arrives in a panic saying that he saw the two headed dragon. He's placed in charge of guarding her, making sure that she doesn't leave the inn. Lucy tries to escape but Scotty won't let her. He claims that he's in love with her. He then confesses that tomorrow she is going to be the dragon's dinner explaining that every 30 years a McGillicuddy gets fed to the two headed dragon and she's the only one left.
Lucy wants to go see the two headed dragon in hopes that she can convince it not to eat her. The two headed dragon (Fred and Ethel) come out of their lair. They try to decide how they want their dinner prepared and of course they can't agree. Lucy and Scotty arrive but fail to talk the dragon out of eating Lucy. After they leave Scotty says that he'll fight the dragon for her. But when it's time for the dragon to eat Scotty is chicken and pushes Lucy toward the dragon.
Lucy wakes up from her dream. She hits Ricky with her pillow and calls him a coward. He doesn't understand what's going on.