Team Chaotic & the Mysterious Case

(This is an evil submarine inhabited by skibidi toilets, and no one knows about them yet.)
The Chaotix team has been offered this case (for a hefty sum!!!) to investigate. The mission is to dismantle and uncover the secrets of a submarine (submarine "Object 666," or more simply "Skibidi Submarine"), which is located at a depth of 150 meters and has been abandoned for 50 years under strange circumstances (no one really knows the details). All that is known is that a strange frequency vibration is occasionally detected there, as if someone is singing a melody (Skibidi-dop-dop-es-es).