Knox meets with McLain, the formidable head of Supply, to plan what he insists is not an uprising but an effort to set the silo right. Standing over a blueprint, they assume IT already suspects trouble and discuss the practical problem of moving Mechanics upward at night without losing control of the down-deep. McLain immediately focuses on strategy, warning Knox that it would be dangerous to plan as if Bernard and IT were unprepared.

McLain then analyzes where support and resistance are likely to come from. She argues that the mids will be the hardest obstacle because they stand physically and socially between Mechanical and IT, while many toppers may be more open to revolt because they will feel the betrayal of the silo's lies more sharply. Knox had imagined simply rushing up the stairs before dawn, but McLain pushes him to think beyond the initial attack and consider how to pass through the silo without turning everyone against them.

When Knox suggests crude solutions such as welding doors shut, McLain rejects them because they would worsen the aftermath and make reconciliation impossible. Knox admits he is willing to use force against those who lied, but he also explains the larger motive behind the revolt: people have lived under false fears of the outside, cleaning, and even speaking of a better world. Knox says that if they can end those lies and begin talking openly about exploring the world beyond the silo, people may find hope instead of terror.

That argument helps win McLain over, and Knox proposes a diversion: a staged power outage, blamed on recent generator work, to disrupt the mids and create cover for their movement. McLain refines the idea into an operational plan. Before dawn, she will lead a Supply squad upward with candles and flashlights as if responding helpfully to the outage, and later Knox will follow with the rest of his people. Their goal is to seize IT on the thirties, contain it, and then force Bernard to come to them or pursue him afterward. As Knox leaves the meeting, hearing tools being turned into weapons and feeling the trust of both his people and McLain, he recognizes loyalty itself as a heavy burden.