Tsunade suspects and orders an investigation about Danzo's plot. As Chiriku, Sora and the group failed to intercept four coffins, Fudou, Fuen and Fuuka trap the group at the canyon in a maze of pits and traps, where Yamato and Sai encounter Fudou and Fuen. (Source: Wikipedia) Twelve Guardian Ninja arc: (6/18)

Aired on: 5/14/2008