An unusual comet of enormous size fell to the ground, transferring the area around it to another world. There are a lot of such transferred sites in this world. They appear at various intervals, reassembling the planet, piece by piece, like a puzzle. Fragments, gas and dust from the comet change people and animals. Someone mutates into bloodthirsty monsters, someone retains their sanity and receives supernatural abilities with the ability to develop them at the expense of other fragments and mutants.