GB-Bubble Bobble: Part 2

As seen in the game intro, Bub, and a girl named Judy, were sitting in a park. Suddenly, a floating skull character, who is one of the Skull Brothers, captures Judy into a bubble, and sends her and Bub into the air. Two characters named Drunk (from the original Bubble Bobble) follow the skull and take Judy away. Bub turns (or is turned) into a bubble dragon and heads off to rescue his girlfriend. There is also a two-player mode, implying that Bob has suffered the same events as Bub had. However, the manual states that Judy is a friend of both.

In the Game Boy version, a character named Robby has to rescue people from a village, who, according to this version's intro, have been captured by a skull character.