The Marauders dedicate themselves to preparing Remus for his dangerous mission, spending every free moment in the library studying defensive spells and battle tactics. James sacrifices his beloved morning flying sessions to help train Remus, while Sirius works through his anxiety about the upcoming revelation to James. The chapter culminates in Sirius accidentally revealing their relationship when he comforts Remus, leading to James finally learning the truth about Wolfstar in a surprisingly accepting conversation.