Spoilers for this episode and earlier episodes.
A Halloween visit from Darlene shows an earlier Elliot trying on the fsociety mask with their father's jacket. During their movie night, he begins talking about attacking E Corp. In the present, Darlene needs him back, but Elliot still wants to escape Mr. Robot. Ray gives him a chessboard, and Mr. Robot proposes a match with control of their shared life at stake. Elliot must decide whether to accept that promise.
Krista warns Elliot that destroying part of himself is no solution. Leon instead urges him to think about the life he wants. Elliot imagines a future with the people he cares about and agrees to play. Every game ends in a stalemate. He cannot settle their struggle by treating Mr. Robot as a separate opponent. Darlene's appeal remains unanswered by the board, and Elliot eventually chooses to help her himself.
The FBI searches the arcade and finds a spent casing, while Cisco warns Darlene about the investigation. Angela uses Price's evidence to have two executives arrested, then tries to understand what he expects in return. Joanna seeks money from Scott Knowles as her resources shrink. Elliot accepts Ray's computer work, gaining a connection to Darlene. Once she tells him about Romero and the discovered arcade, he decides their next target must be the FBI.