A demon is kidnapping Ranma's fiancees one by one, while plots within plots conspire to prevent him from saving them. And in the end, he will have to choose whom he will marry... and the others will die.
Ranma has been captured. Fastened to a wall a voice tells him that it's time for him to decide. Akane, Ukyo, Shampoo and Kodachi are also held prisoner and he must choose one in the next 5 minutes. Whichever one he chooses, the other three will die, if he chooses none, all four and himself will die. How did this situation happen? Well, it all started with Ryoga stealing Akane's panties...
↑Original instalments were: Prologue, (1) Ryoga Finds His Happiness, but Ranma Finds Trouble, (2) The Massage of Newfound Love - Akane’s Emotions are an Open Book, (3) Mousse vs. Kuno - The Pen is Not Always Mightier than the Sword, (4) You Can Find Happi's Nest in the Strangest of Places, (5) Botsuzento Martial Arts is Akane's Specialty, (6) Look out, Akane! The One Thousand Pig Tornado Punch, (7) Ranma's Double Dating Disaster, (8) Sayonara Ukyo! The Demon Strikes Again!, (9) Meet Razor, the Backwards Talking Knife Boy!, (10) A Hostage in Cologne's Kitchen - The Demon Revealed, (11) Yin and Yang Collide! Ranma's Mixed-up Mishap, (12) Will the Real Demon Kidnapper Please Stand Up?, (13) Plan Ahead! A Demon Lurks in Akane's Future, (14) The Truth is Out! Akane's New Boyfriend is..., (15) Ranma’s Plan Unfolds - I'll Defend Akane With My Life!, (16) The Feuding Fiancée Fiasco! There's Only Room for One!, (17) A Last Desperate Attempt at Salvation, (18) I Don't Believe It! He Chose... HER?, (Epilogue) For Better or for Curse