My K-pop Brothers: The Guardians

Hayoon is living a quiet life like any other introvert until she returns a left behind cell phone in a convenience store. Because of this accidental act of kindness, her life gets thrown into chaos. She soon finds out, that cell phone belongs to one of the members of a world-class all-male K-pop group.

By the end of the week, she's 'adopted' into the group and moves into their house as their new 'little sister.' Hayoon unpacks her bags with excitement and nervousness. A girl who previously had no one, now has 8 brothers! But the boys are so busy with their life of concerts, fan meetings, choreography, and interviews... Hayoon struggles to see how she fits in. After weeks of neglect and injuries, she realizes having a family isn't what she thought it would be.

Hayoon's cameraman, Dohyun, continually struggles with fulfilling his job responsibilities without overstepping while having to watch Hayoon be pushed to her limits. After 3 weeks, he can't stand it anymore and edits together a video for her 'brothers' to watch of how their 'little sister' has been treated behind-the-scenes.

The harsh truth becomes the catalyst for a drastic change of attitude. Although Hayoon is now the Mpeak princess, things don't stay smooth sailing for long. Their family is constantly fighting to stay together, especially Hayoon and Junwoo (Mpeak's dance leader). The members slowly find out the secrets Hayoon has been hiding, may be the answer to their problems, but will it be enough to stay together?