Plot summary
Elliot has a new plan to destroy E Corp's tape back-ups of their data at Steel Mountain involving hacking into their climate control system by connecting a Raspberry Pi to slowly raise the temperature (bypassing the climate control system) to a point where it will destroy the magnetic tape back-ups, but this requires physical access to the heavily fortified data center. Elliot, Romero, Mobley, and Mr. Robot go to Steel Mountain. With his morphine supply cut off, Elliot starts to have serious withdrawal symptoms including multiple hallucinations. Darlene and Trenton stay behind to contact Darlene's ex-boyfriend Cisco and arrange a simultaneous hacker attack by the Dark Army on E Corp's backup sites in China. Meanwhile, Angela and Shayla do ecstasy which results in the two kissing. The next morning, Angela sabotages Allsafe using Ollie's work ID and computer.
Credits
Adapted from Wikipedia contributors, List of Mr. Robot episodes. HTML formatting and reference markers removed.