Mamamoo is one of the famous girl group from South Korea, aside from their unmatched talent they are also known with their playfulness, the beageles as how their fans named them and of course, their strong bond with each members. But behind all that, the truth is Mamamoo is more than just that. They are more than just a playful and dorky girl group. There's something going on that not many people knows except for their close ones. They've been keeping the biggest secret that if the world knows, it's either will be the end of their glory days as an idol, the ending of their career or it will be the new beginning for them all, a better life, maybe. Despite their happy and playful image there is conflicts that these four beautiful woman has been secretly hiding from anyone, buried deep within themselves. A conflicts that strongly bothers Moonbyul thoughts. No matter how hard she try to deny all that, the answer is still the same. Even the universe failed to help her denying the fact that Hwasa has done something to her without her knowing. Something that she failed to explain. Something that beyond her own mind. No matter how she try to ignore it, she's still that weak Moon Byulyi whenever a woman named Ahn Hyejin around her. This is also the very same conflicts that make Hwasa battling with her own mind and her own heart for only God knows how long. Never have she ever thought Moonbyul would invading her mind and shaken her ground this badly. Moonbyul invading her thoughts ten times harder when she is left alone with Moonbyul. Fifty times harder before she gone to bed at night. Ninety more harder if there is no group activity. Between their ego and their pride to what their heart wants, how would Moonbyul and Hwasa dealing with all this? How are they going to face the day that they never thought would come and the the day that drastically change everything between them.