Solar is an engineer who's alone in all aspects meets the company's new manager, Moonbyul. Solar led a great secret vampire life for 25 years alone in the human world, then Moonbyul came. What complications will Moonbyul bring to Vampire Solar?

Solar, a mermaid that went to land to her belief that it's the cure to her illness. She met Moonbyul, a lady pilot who is alone in her life that is full of arrogance. As two different beings meet, can they take a big part of each other's life?

Bottled up feelings for my best friend after 5 years, should I tell her? Or shouldn't I?