Stage of the Partners is a stage with flat ground and no hazards or platforms. It takes place at the Summit of the Buddy Fighters Tower, which has pierced through the sky, allowing for a view into space and the world below. The stage itself is a checkered arena surrounded by pillars with pits of blue fire on top, and a larger pit of blue fire in the center of the background. There are two large statues of King Dedede and Meta Knight, with their respective emblems on the pillars as well.
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In Story Mode, this stage serves as the arena for the final battle against King Dedede & Meta Knight. This stage has two themes that play when fighting on it: the battle theme for Waning Crescent Masked Dedede & Waxing Crescent Masked Meta Knight, and a medley remix of the main theme of Kirby Fighters, the title theme of Kirby Fighters Deluxe, and the main theme of Kirby Fighters 2.