In volume 27 (why isn't Amazon keeping this info in the title?) we see more of the craziness of Ranma's life, like the Phoenix Sword, more of Shamppo's rivals, a monkey piest, and Nabiki's ultimate 10 yen bet!

Can Ranma defeat Kuno while Kuno possesses the phoenix?
Will Shampoo rid herself of the twin poison plant masters, Pink and Link?
Nabiki finds the folly of dating heir of the Kasha-O-Dojo.