Blu found out that Red has a secret stock of piles of gold hidden in a mountain, so naturally, Blu heads out to take over the mountain. Now the ancient mountains have turned into a bloody war grounds.
Boojums Snarks pack for the game mechanics,
the Japan Content pack for the custom textures and props,
and the Dusk till Dawn skybox pack for the skybox (specifically this one: https://tf2maps.net/downloads/sky_yuki_01.5618/ made by Void)