While the village is under siege, Naruto tracks down Sora . He questions Sora's motives for siding with Furido (the antagonist) and attempting to assassinate the Fifth Hokage, Tsunade. Significance of the Episode
Team Asuma encounters a horde of reanimated corpses from the Kohaku Clan, which were stolen from their graves to attack the village. Naruto Shippuden Episode 66
This episode is part of the first major filler arc in Shippuden . While not in the original manga, it provides deep backstory for Asuma Sarutobi and his past with the elite Guardian Twelve. While the village is under siege, Naruto tracks down Sora