The story of four little people struggling to survive in the world and stirring up trouble. It was originally a branch of the sect, but for some reason, this branch was expelled from the sect. The master was framed by a villain, his soul was frustrated, and he was forced to retreat. However, the enemy killed them all and attacked him during the retreat, and the master was killed. Four brothers and sisters from the same school who originally disliked each other were forced to grow up overnight and rely on each other to find the real culprit who killed their master and take revenge, causing quite a stir in the world.