Takopi, a tiny being from another world, lands on Earth with a specific goal: to spread joy! He crosses paths with Shizuka, a student whose face is constantly clouded with sadness, and vows to bring back her smile using his “happiness gadgets.” However, the tiny alien is completely unaware of the dark reality of the world in which the schoolgirl lives, and it will take much more than just gadgets to help her discover happiness...