47 Ronin stars Keanu Reeves as Kai. Kai is found abandoned and taken in by a man from one of the prominent families of a nearby village. Trying to get accepted by the other locals proves to be a challenge for Kai because of his outsider status. However, he is eventually unintentionally thrust into a role requiring his fighting abilities after his adopted father dies. There is much more to this movie than what I wrote. It is listed that the character of Kai was written into 47 Ronin. However, the end of the movie implies that 47 Ronin is partly inspired by real life events that took place. I say partly because obviously many of the events portrayed in the film such as: supernatural/fantasy elements centered around a magical shape shifting witch(played by Rinko KiKuchi) (contained in the film) obviously did not take place.