After a depressed young woman dies alone in an accidental fire in her apartment, she wakes up to find herself in an underwater world. There, she meets a young man who shows her his power, a magical manifestation of a swordfish. With him and his companions, Camellia embarks on a journey upwards to make it to the fabled paradise island above the surface of the water. Through the confusion of adapting to a new world, Camellia searches for a way to redeem herself from her past life. With animalistic magic and reliable friends, she has to learn to make the most of what she's got and enjoy the time she has — or die trying.