The I.O.U. is a company who works secretly, providing justice using methods which may or may not break the legal laws. 25 years after it was founded, The I.O.U. recruits eight different girls, insisting that they owe the company and to pay for their debts they must become the latest unit named: Oh My Girl. Hyojung is an innocent girl who has led most of her life digging up ginseng or something and becomes the leader of the group. JinE is a girl with a mo

Arin is the maknae of a rich family headed by Hyojung the dad, or maybe it's headed more by JinE the mom? Well, moving on, she has two older sisters. Mimi the chill eldest and Jiho, the overprotective sis. Jiho has a cool girlfriend named Binnie who is an up and coming actress. Arin also has a private tutor named YooA whom Mimi always spies on secretly. Seunghee comes into the picture by getting hired to be Arin's bodyguard. Seunghee and Arin start off on the wrong foot but after wint

Binnie is just your average smart kid in college who's at a point in her life where she actually gets stressed. She decides to take a walk but unfortunately, it wasn't a very smart move to just waltz out alone at 3am in the morning and poor Binnie finds herself in.. a huge burlap sack? After some accidental kidnap of sorts Binnie finds her life beginning to intertwine with a girl named Jiho, an outgoing,fun-loving cool kid who just so happens to be stealing something important

Mimi and JinE broke up. Will they really be fine like this? What will be left when they don't have each other?