Three aliens who originally lived in space at the Jiexin Space Station accidentally released dark element factors on the earth and were forced to come to the earth to collect dark element factors. Dark elements like to attach themselves to people with strong criminal behavior. Criminals who are attached to dark element factors will commit crimes even more crazily, so they cannot appear on the earth. The only way is to collect factors. So the super-smart bracelet automatically matched them, who were attending the police academy, as the three physical objects on the earth. I wonder how they are living on the earth, and whether they can successfully complete their mission and return to the Jiexin Station.