Samurai 7 tells the story of a village named Kanna. Every year during the harvest a group of bandits come and steal away almost all of the rice that had been harvested that year. Not only that, the bandits are becoming more demanding, now taking women and children in addition to rice.
The elder of Kanna Village has decided that to protect the village they must hire samurai to fight against the bandits. However, the village has no money and thus must find samurai willing to protect the village for a payment of rice. Three members of the village leave to attempt to recruit samurai. They travel to the city and search for samurai willing to work, and after finding several samurai and having a few encounters with the local government they return to Kanna village to prepare defenses against the bandits.
The samurai train the villagers in the use of bows, building walls, and construct a giant ballista to defend the village against the bandits. After successfully defeating the bandits, the samurai then launch an attack upon the capital to defeat a power-hungry ruler who has recently risen to power as Emperor. After heavy casualties for the samurai, and the near-destruction of Kanna village, the capital is finally defeated.
It was based on the history of the Warring States Period.
For a complete list of the episodes, see: List of Episodes.