Mission: Protect the Waterfall Village!

is the second Naruto OVA.

Synopsis
Team 7, along with Kakashi Hatake, escorted a ninja named Shibuki, who is the leader of his village, to his home at Takigakure. Shibuki was a coward, however, due to the circumstances surrounding his father's death. The Hidden Village had a secret bottle of water called the "Hero Water". The water imbued whoever drank it with a dramatic, albeit temporary, increase in chakra. The effects were similar to opening a "chakra gate", in that it shortened lifespan at the same time. Five missing-nin came to the village to steal the Hero Water, and Team 7 defended the village against the incursion. Shibuki was forced to drink the water in the end to fend off the invaders.