In an average, seaside town, comes the seemingly mundane cafe business ‘Bayabyss’ located right by the bay. It's always been known for its good coffee, confectionery and a mostly disastrous day-to-day life within its walls. With its manager-totally not a witch-Yu-chan and the rest of the strange employees, it was a totally normal cafe. However, behind the lens of human eyes, reveals the actual mythical forms of everyone there; of leviathans, selkies, deities and more. Everyone has their secrets, having a secret bar in its basement, born out of the monstrous depths of the sea, being a viral, virtual idol? How will these very magical creatures live out their lives, acting in a very human world?