You wake up in the rubble of what was once City 17, wearing elite combined armor but the helmet fails due to the rubble

when you come out of the rubble you see in the distance a man with a suit and briefcase who looks at you but disappears in an instant

Suddenly you receive a call from Overwatch

<<"All autonomous units: Accept mandatory sector assimilation. Coordinated constriction underway. Debride and cauterize. Entering phase nine...">>