This wargame is set in 1951 in an alternate world where the U.S. landing at Leyte Gulf was defeated by the Japanese navy. The Japanese still lose the war but it takes longer and the Soviets and the U.S. are forced to invade Japan. The Soviets have established a communist Northern Japanese people's Republic in Hokkaido while the U.S. establish the democratic state of southern Japan (Honshu and the rest of the Islands). In 1951, combined U.S. and Japanese forces invade to take back Hokkaido. This game is also based on Daisuke Sato's novel of "Seito" (征途).