A couple of monkeys are trapped inside a ghost capsule in Monkey Go Happy Stage 621. There was preparation to conquer the depths of space and future astronauts have to fix something, but instead they activated the door lock. However, they disappeared altogether. The monkey came to the rescue, but in fact everything needs to be done by you, as the smartest player. Gather the leftover parts and items. Find out what the heroes want and solve puzzles to give them what they need. As a result, everyone will be happy. And the main monkey is just happy in Monkey Go Happy Stage 621.