Having thwarted Bowser's previous plot to marry Princess Peach, Mario and Luigi now face a fresh threat in Bowser Jr., who is determined to liberate his father from captivity and restore the family legacy. Alongside companions new and old, the brothers travel across the stars to stop the young heir's crusade.
After the loss of her husband, a grieving woman seeks solace with her in-laws at their secluded family home. However, it soon becomes a reunion from hell as the Book of the Dead unleashes demonic forces that transform them into Deadites one by one.
