Due to being Cinder's sister, Ruby turns out to become quite the mischievous troublemaker. But when she enrolls and infiltrates Beacon, she questions whether or not she is just pretending her ties of friendship as time passes.

Master Hand is throwing his fourth SSB tournament, and is calling back all of his old fighters as well as several new ones. One of those fighters is happy to be back at the Smash Mansion with his friends, but may find much more than that...