On the seabed of Yanyu Harbor, there are seven palaces, inhabited by mermaids of seven different colors. Together, they guard the beautiful harbor.
Lan Ji is also the mermaid girl living here. On that day, Lan Ji stabbed Yuyang Jinran, who had been in love with her for three hundred years, with her own blue scale sword, which also broke the tranquility of the two families. Since then, Yuyang Jinran has lost all memories of Lan Ji. Can the sadomasochistic relationship between them be continued?
At the same time, a black figure often appears next to Lan Ji, seeming to be controlling her and the three realms. He is unruly, domineering, arrogant, and dismissive, but he always breaks his principles for Lan Ji.
The Yaksha clan, which had disappeared for five hundred years, suddenly appeared, causing everyone to panic. All forces secretly gathered to prepare for the next war. Lan Ji also wants to prevent this from happening.
In this entanglement of love and hate and the shadow of troubled times, Lan Ji's love is like the boat swaying in the storm, quietly sailing in an unknown direction.
And what kind of changes will the reappearance of the Yesha Demon Clan bring to Lan Ji's fate and hundreds of years of peace? All the answers are hidden in the unknown fog, waiting for her to uncover them.
Concept: The collision of personal grief and responsibility in troubled times
