Mannie has a difficult time balancing life, revolutionary life, and preparing to go earthside.
On top of that, he has to go to Hong Kong to meet Comrade Clayton, one of Wyoh's revolutionary contacts. He warns the cells he meets of the famine six years away.
On his way home, Mannie stops to meet Judge Brody, and he runs into a group of stilyagi looking for the judge to try a man.
Mannie accepts judgehood and sets the terms of payment and the jurors.
The stilyagi claim the man touched a girl, Patricia, inappropriately by putting his hand around her waist and trying to kiss her.
Mannie's judgment is to fine the man, Stuart LeJoie, fifty bucks for not learning Luna's customs before becoming a tourist. He also fines the youths five bucks each for not teaching the tourist for an honest mistake.
At the taproom, Stu questions Mannie about Luna society, and the two get to know each other.
Mannie invites Stu over for dinner and has Mike run a background check on him—based on this information, Mannie believes he's made an important earthside contact.
Stu proves a hit with the Davis family, especially Mum.