The Black Sugar Gang is said to have captured a gigantic statue of Princess Toadstool and taken it to their base of operations on Kitchen Island. Throughout the game, the forces of Captain Syrup defend the island from the lone intruder Wario. In the end, the captain is seen in the quarters at Syrup Castle, where she is revealed to be a woman. She gets up from bed and orders her genie to rise from the lamp and fight Wario. After the genie is neutralized, Syrup gets upset and hops away while chucking a bomb, blowing up the castle. The statue is then shown to be real, hidden inside the castle interior.
In Wario Land II, three of her minions steal valuables from Wario's castle. After realizing this, Wario chases them while they attempt to throw him off their trail. The normal game has five endings, one of which ends the journey at the reconstructed Syrup Castle. After Wario collects new treasure, completes his treasure map and reclaims his own treasure five times, he proceeds to the truly final chapter of the game, which involves a hidden cave not far from Syrup Castle. This time, Wario steals "the Syrup's treasure", taking it from the giant spear man.
Captain Syrup (AKA "Maple" in previews) returns after a decade-long hiatus. In this game, she serves as more of a rival than a straight villain. She also uses a new ship - the Sweet Stuff - rather than the SS Tea Cup. The rest of the Black Sugar Gang is not seen in this adventure.