Akane Tendo meets her new fiancé, Ranma Saotome, a martial arts prodigy with a twist: he magically transforms into a girl upon touching cold water.

With the Tendos, the Saotomes, Ryoga, Shampoo and Ukyo misinterpreting Tatewake Kuno's invitation to his two loves, Akane and 'The Pig Tailed Girl', to try his new yacht, a whole new episode of chaos begins in the already unstable lives of the Saotome/Tendo clan. A mysterious shadow kidnaps first Akane's sister Kasumi, then continues on until all the girls disappear. All except everyone's favorite hydrotranssexual.

When Prince Kirin of the 7 Lucky Gods shows up at the Tendo dojo looking for his bride-to-be, guess who's accidentally holding the scroll that signifies his future mate? Why, Akane, of course, and the rest of the Ranma crew is forced to take a boat to China in order to save her from the horrors of marriage and a diet of pickled vegetables.

Shampoo discovers a broach which makes her feel the opposite of her true feelings for Ranma. Ranma begins to panic at the thought of losing one of his fiancees, and plans to tell Shampoo that he loves her.

Kasumi has a dream that Santa Claus asks her to hold a Christmas party at the Tendo Dojo. Practically everyone from the series is invited and chaos ensues.

Following a string of food thefts, Akane heads out to find the culprits when she runs into the sisters Natsume and Kurumi who soon follow her to the Tendo Dojo. Seeing how hungry the pair are, the Tendos decide to take them in. However, the sisters then reveal that they're searching for their father, Soun Tendo!

The plot focuses on the fallout from Ranma and Akane's initial defeat by Natsume and Kurumi, two orphan sisters who believe Soun Tendo is their long-lost father and intend to claim the Tendo Dojo.

Ranma Saotome, a teenage martial artist, and his father Genma travel to the 'cursed training ground' of Jusenkyo in China. There, despite the warnings of the Chinese guard, they fall into the cursed springs. From now on, whenever Ranma is doused in cold water, he turns into a girl and a cute, well-built redhead at that. Hot water changes him back into a man again, but only until the next time. To make matters worse, his father engages him to Akane Tendo, a girl who hates boys.

Happosai fed up with Ranma interfering with his hobby, decides to use a sleeping incense on him to make Ranma "sleep till spring". But Akane accidentally smells the incense and due to unforeseen side effects starts attacking everyone and everything in her sleep. Now the gang has to find a way to wake her up.

单元剧1+1=1是一个专讲夫妇间事的剧集，每一集都有不同的故事。其中周润发与赵雅芝参演过其中一个单元，两人剧中饰演的是夫妻。 　　每一单元皆由不同的艺人分演其中的夫妇，演出不同的独立故事，是一个很有意思的节目，播出时也很受关注与欢迎。而每集因为剧本不同，演员不同，演出效果不同，受欢迎的程度也自不同。 　　周润发（饰阿杰）与赵雅芝（饰阿兰）饰演夫妻，阿杰与阿兰原本开着修理铺，过着如意的日子，但阿杰从前的一群恶霸朋友忽然间出现，逼迫阿杰，阿杰开始想法卖掉铺子，与妻子阿兰终于产生矛盾。恶霸们借机来到阿杰的家里，想打劫钱财，阿兰亦陷入他们的手里，阿杰赶回家里，不得不顺从他们答应取款给他们……