A rescue mission gone wrong and now they are lost in another world.

To a soldier, death is the end. Though, to a certain someone, that's just an excuse for him to do whatever he wants with them. And for that, those soldiers start their new adventures in a completely different plane of existence: Gensokyo.

Untuk seorang tentara, kematian adalah sebuah akhir. Walaupun, untuk seseorang tertentu, itu hanyalah sebuah alasan bagi dia untuk melakukan apapun yang mau dengan mereka. Dan untuk itu, tentara-tentara itu memulai petualangan baru mereka di sebuah dunia yang benar-benar baru: Gensokyo.

Captain Price and Soap travel to Gensokyo in order to evade U.S Forces. There they become entangled with the locals, namely the Scarlet variety. Things become worse when the U.S Forces show up in Gensokyo and learn about the spellcards.