Kim Taeyeon, a simple (with a little abnormality) maiden who's in love with her Best Friend and Roommate, Lee Sunny. She maintains a simple life at a simple lifestyle, studies at an Elite School and plans to make Sunny fall in love with her on the easiest way as possible, and that is to be the closest person to her.

She lives in a dorm with her roommates, her Best Friend and the Flirty Beauty, Hwang Tiffany; and other unique and wild girls who are their "Neighbors" like the titled "Ice Princess" who is actually a Player, Jung Jessica, the Star Pitcher and Womanizer, Kwon Yuri, the Young Actress, Im Yoona and the Dancing Prodigy, Kim Hyoyeon and there's another one, the Ridiculously Rich Girl who owns the dorm they live in, Seo Juhyun or Seohyun for short. 

She's anemic and seems to faint easily at high room temperature or when she fantasizes erted thoughts which is why Tiffany gave her the nickname "ByunTaeng". She's proud to stand at 5' and she doesn't like it to be more than that.

Her pride is her ity as she keeps and survives together with her motto "Being straight doesn't protect your ity, so be GAY!". She has a hidden on gay os and seems to stalk her little brother, Key and his pals who are middle schoolers and mentally accuses them being homos.

Being such a selfless, smart, simple and straight forward girl, she also has some negative attributes to share:

She hides her feelings for Sunny and doubts herself too much.

She's assertive and violent.

A closet ert.

But what will happen when she meets a new student at the first day of the current school year?

Choi Sooyoung, the girl who just came from Japan and is a total (better) opposite of her. She's Athletic, tall standing at 5'8" and has a dual-citizenship, although... uhhh... She eats too much. One more thing, Sooyoung happened to be Sunny's childhood lover and came back to win her  back since Sunny just shrugged it off and make their childhood promises, like to marry when they get older, to reality. They started fighting for Sunny's love and accepted the obligations that who ever loses will never ever be allowed to see Sunny ever again, although it always ends up as a failure or it will result to bigger trouble.

What will happen now that Taeyeon finally met her first real enemy and rival at Sunny's love?

Worst of it all, how does Taeyeon stop herself on falling in love with her own enemy Sooyoung in the process?

Follow the misadventures and fantasies of Taeyeon and Sooyoung as they strive for Sunny's affection (and mostly her small body) in this crazy, pure Romance-Comedy Love Triangle story!