Ranma's Birthday - no one in Nerima remembers, catches Rayoga having sex with Akane, and watches as Akane splashes Ryoga and they keep on having sex.  Ranma stunned and leaves the room.  Ranma waits in living room for Akane, then confronts her about it.  Akane reacts more violent than usual.  Ends up in Juuban after being malleted.  Walks into a bar gets drunk and meets Usagi.

Usagi and Mamoru's second anniversary (of dating)- Usagi catches Mamoru in a not so discreet affair with a general of the current enemy.  Runs off and gets drunk in a bar.  Meets Ranma, and they trade stories.  They get too drunk and are kicked out.  Head to another bar where they meet Hotaru and Setsuna.

Setsuna and Hotaru are depressed about being completely alone, even if they are in a crowd, and how everyone is afraid of them.  Everyone trades stories, including Ranma's curse.

Somehow they get legally married, and in the morning when they wake up, they are all in bed together, and all four of the full time girls are pregnant by Ranma.  They wake up to unusual sensations, and the senshi are worried when their transformation sequences are different than normal.