The story follows a 2 year time skip after the events of the World of Light, Galeem, the God of Light with his powerful angelic motifs and Dharkon, the God of Darkness with his were defeated by the legendary 81 fighters saving all the captured spirits and saving the world once again. Peace has finally returned to the world of Smash until the spirits of Galeem and Dharkon were left alive and together, they fused into a more powerful entity known as “Firion”. Another 2 years have passed and Master Hand, a hand-like entity along with his twin brother Crazy Hand began reconstruction of the new Smash world for the next tournament and allowing the spirits to roam free in peace thus named "WORLD OF WARRIORS" until Firion takes control of the hands, resurrect almost all of the villains of the Nintendo Multiverse and send them to recapture those spirits. Now Mario, Pit, and the returning veterans of Smash along with the new generation of fighters must once again reunite, travel through various places around the world, protect the spirits before they go into the wrong hands and stop the forces of evil from obtaining them again.