In the present, five years after the Hong Kong incident.

Cade and you (the sibling of Samuel "Sam" james Witwicky) are living now with the Autobots on a Junkyard somewhere in the middle of nowhere. Since Optimus was somewhere in space searching for the 'creators' who made them.

Present Day Cade was trying to fix bumblebee's voice box so he had not to speak through the radio channel's anymore

"Can you hand me the screwdriver?"