Playing as Ness, the player must defeat Luffy on Saturn Valley. Additionally, the player must "protect" the three Mr. Saturns that wander around the stage. If any of the Mr. Saturns fall off or are thrown off the stage and reach a blast line, the player will fail the event.
The ranking the player receives is based on how much damage the player has accumulated by the end of the event. The specific conditions for this are listed below.
The description of this event is written from the perspective of the Mr. Saturns, who speak in a language called Saturnian which consists of odd-looking English letters and erratic uses of words such as "ZOOM".