During the Christmas season, Harley and Poison Ivy lure Bruce into a hypnotic shopping spree while Joker threatens Gotham with a sonic bomb loud enough to deafen anyone within earshot of its explosion.

Crime boss Edward "The King" Barlow dies and in his will leaves his arch-rival, the Joker, a large fortune. Joker immediately goes on a shopping spree, even searching for a replacement for Harley Quinn, but realizes too late that all the money is fake.

Nightwing tells Robin the story of how he and Batman grew apart. The story reveals how Batgirl discovered Batman and Robin's true identities, and also explains some of the romantic flare between Barbara and Dick.

Exposure to a weird mixture of chemicals, including the Joker's laughing gas, changes straitlaced newsman Jack Ryder into the crazed Creeper. He looks to kill the Joker, and develops a much unwanted crush on Harley.

Harley reflects on her first meeting with the Joker as she plots to eliminate her main competition in his attentions—Batman.