The unlucky guy Xunyu lost the necklace that symbolized his identity after his coming-of-age ceremony.
The mermaid who can't go home without her necklace: She has to fight to avoid being dried on land!
Xunyu found the man who took his necklace. Unexpectedly, this man was the third prince of the empire!
The man gave him a noble and reserved look: You are not bad, be my substitute lover.
Xunyu: ... Okay, why not! What flavor substitute do you want? All satisfied!
Purpose: Protect the ocean