Due to an accident, the ordinary fat girl Fu Yi rescued the mermaid Fahai at the beach, but was swept into the sea of seven gems by teleportation magic, and exchanged bodies with the mermaid Fahai. She transforms from a low self-esteem to the most beautiful mermaid in the Ruby Sea. She experiences underwater campus life, makes new friends, encounters her first love, and at the same time embarks on a fantasy journey to collect the seven wish pearls and realize her wish to return home. On the way to pursue happiness and belonging, Foy gradually understood that true beauty and courage had always been hidden in her heart.
Concept: Fantasy love story