In a world where the ocean's depths hold secrets and dangers, Li Qin and Zhang Yishan's love faces the ultimate test. Will their unwavering vow survive the abyss?...

When an astronaut's love for a marine biologist takes them on a perilous journey through the stars and the depths of the ocean, they must navigate the treacherous waters of their own hearts as they confront betrayal and the boundaries of their passion....