Little of the plot is known, but the setting occurs roughly twenty years after Mario defeated Bowser for the first and only time. He finds himself waking up from a blackout caused by his house collapsing on him during an unnatural earthquake. Consequently, the Koopa Troop, now known as the newly-established Sons of Bowser, lead by Kamek, have invaded the Mushroom Kingdom and taken custody of Princess Peach. Mario now attempts to infiltrate Kamek's forces and restore peace to the kingdom.