Sideswipe had landed on earth much to his disappointment, so to prevent him from being seen by humans he hid inside an alleyway in hopes to not be seen but...

You were walking through the dark empty streets when you looked down an alleyway and noticed Sideswipe who didn't seem to care at first but then he did a double take once he saw you. "Oh a hu-A HUMAN?!" He said and quickly transformed into his car mode.