In China, there lies a famous training springs, a place where martial artists can hone their skills to great levels. Unfortunately, the springs are also cursed! Teenage martial artist Ranma falls into the 'spring of drowned girl' and now changes into a woman every time he's splashed with cold water. That doesn't stop his father from engaging him to Akane, the daughter of an old friend and a tough girl who has better thing to do than worry about boys. But Akane isn't the only girl who has a chance for Ranma's affections -- two other girls have also been betrothed to him.
Urayama Minoru is a care free boy who has no interest in the idol group AKB48. On the other hand, he does worry about Yoshinaga, his fellow classmate. She wants to become a member of the group and auditions for a spot, so Minoru goes undercover as a female in order to help Yoshinaga with her stage fright. Words of encouragement can only go so far however, and the web Minoru finds himself in is getting bigger.
Ryuu Yamada is a second year student at Suzaku High. Ryuu is always late for school, naps in class and gets abysmal grades. His life is a dead bore. The beautiful Urara Shiraishi, on the other hand, is Suzaku High's brightest student. One day, without explanation, their bodies are swapped! Ryuu ends up in Urara's body, and Urara in Ryuu's.