Bonk, the title character, is a caveboy who battles various prehistoric creatures by "bonking" them with his large and invincible forehead. Bonk must rescue the Princess Za, who has been kidnapped by King Drool, the main villain of the game.

Bonk, the title character, is a caveboy who battles various prehistoric creatures by "bonking" them with his large and invincible forehead. Bonk must rescue the Princess Za, who has been kidnapped by King Drool, the main villain of the game.