The player takes the role of Rad Spencer (Ladd in the original NES version), an agent of the FF Corps (the FF Battalion in the NES version), whose mission is to rescue his ally Super Joe from the Doraize Army and prevent their leader, Director Wiseman (named after the Weizmann character from the Japanese Famicom game, who was renamed Killt in the NES localization), from the Doraize Army's secret project codenamed Albatross.
[1] This version also shifts the military theme present in the original to a more sci-fi territory.
The uniforms and helmets of the enemies are changed for futuristic armors and "spiky" hair.
These sequences and character drawings in the in-game dialogues, making the Game Boy version more story oriented.
A difference from the NES version are the player's encounters with enemy transport vehicles.