Osamu Tanaka is a young Japanese Salary man who traveling to Mexico City to a business meeting, but before making the trip has a little accident that causes him to remember his past life in 1613 when he was a samurai who was part of the General Hasekura men who traveled on the ship San Juan Bautista to New Spain landed in the present port of Acapulco. In his journey he meets his Senpai, Yokho Katsura, who visit various tourist destinations of Mexico like Acapulco, Malinalco, Chalma, Teotihuacan, etc. But in his dreams Osamu will realize that this same route traveled 400 years ago, so his trip will be both past and present of Mexico, and remember to have met a beautiful Azteca woman who had to escape along with her village of the Spanish conquerors