Making a stop at a nearby port to stock up on supplies, Naruto buys a rare mushroom from a vegetable merchant. But soon after they set sail for their next destination, Naruto and the other crewmembers find their ship infested with poisonous mushrooms.

As he prepares for the coming war, Shikamaru begins to feel the pressure of shouldering the lives of his friends. To help ease his mind, Shikaku sends his son on a mission to Mokuzu Island where Shikamaru meets up with Naruto.