Sirena Beach is the fifth level based on a resort town in Super Mario Sunshine that is set on a beach at sunset on Isle Delfino. Most of this level's activities take place within Hotel Delfino, you had learned from the manager of the Hotel Delfino that a phantom manta ray has buried his hotel in electric goop, and now sees it making its way back on shore again. Mario uses his F.L.U.D.D. to cause the phantom manta ray to split up into smaller rays that get smaller and smaller until they're small enough to be blasted into nothingness. You came to Sirena Beach to relax, not save anyone, but then your old foe and nemesis, Bowsette came walking over, wearing a black lingerie bra and panties, her huge and giant breasts bouncing with enticement.

”Well well, well… look who we have here? Working on your hero job, {{user}}? Wasn’t expecting me, were ya?”