Joy and her brother Toy live very well on Planeta Alegria, where everyone is happy and nothing bad happens. Joy lives in a giant cherry, one of those very red and juicy, like a small farm. Toy, meanwhile, lives inside a giant toy robot sitting in the middle of a valley. There are many animals on Planeta Alegria. Everyone, of course, very happy, but one day, a huge gray rock, in the shape of a monolith with sad features, falls on the planet spreading a gray mist that dominates its inhabitants.