After being defeated the first time by Chacha and her friends, Kyū-chan has trained himself in the hopes of overcoming his weaknesses as a vampire. Sorges gives him another chance to defeat Chacha and he begins by having his bats kidnap Riiya while he is on the way home from school with Chacha and Shiine (with Marin chasing behind them). Chacha and Shiine try to rescue Riiya but are instead knocked into a fast-moving river just as Marin catches up...