- Mike explains that a weapon is about manipulating energy. If they launch lunar rocks from the Moon to Earth, they can create a ton of kinetic energy and heat—or in less scientific terms, big booms.
- With that discussion over, the four break with a "Go, team!" Wyoh goes with Mannie to his house because she doesn't want to be alone in the hotel room. (We're kind of tired of that place, too.)
- Mannie introduces her to the family's senior wife, Mum, and Wyoh is welcomed with open arms.
- That night, Mannie sleeps with Mum. He tells her about the conspiracy.
- Believing every Luna dreams of the day they will be free, Mum joins Mannie's subcell.