Wheatley falls from space & GLaDOS returns him to Aperture to punish him. To show Wheatley what he put Chell through, She transfers him into a human body & dumps him on the surface to fend for himself. After seeing him fall, Chell drags Wheatley back to her home. There Wheatley has to work towards Chell's forgiveness & friendship, all while learning what it means to be human.