Jadyn, a high school rock band member, stumbles into a stunning underwater world, where Adel—a flawless young guide—has been waiting to help him remember something he’s forgotten.

As they explore, Adel discovers both the beauty and the fragility of this world. Shaken by a series of shocks, she retreats home. Jadyn tries to follow, but a moment of hesitation separates them.

Lost and adrift, Jadyn receives a message that seems to come from Adel—one that helps him remember his purpose. But how could a teenager possibly make this world heaven-like…