A woman of both sophistication and carefree spirit conceals secrets behind her smiles. Cassy, like a rare occurrence of a blue moon, seldom reveals her true emotions. Zico, a businessman with a laid-back demeanor, is far from the stereotypical serious and cold CEO. How can he regain Cassy\'s trust? How can he show his trustworthiness? How can he handle a blue moon in different phases?

She's known for being a soft-spoken lady. She easily trusts and falls for someone who shows motives toward her. Zades is a lady who will fall for a heartless guy. He's known for being a mysterious and cold person. No woman succeeds in getting his attention. Darrel is an intelligent man who will steal every girl's heart. How can she fall for someone who's hiding beneath a labyrinth?

A man who wonders how does it feel to step your feet into the surface of the moon. Antoine Glaser, a very smart guy who doesn't seems to care in any unnecessary human activities because in his own perspective it's just a waste of time. He rather spend his time making plans on how to travel to the moon. A careless woman who seems to love ruining everything due to her clumsiness. Statice Miller, a normal girl who loves to read books about romance related to constellations. What if their path will cross?