In I-DOLLS, the player takes on the role of a Frenchwoman, a Korean LLCER student, who goes to Seoul for a year as part of her studies. There, she joins a Korean university in the company of her cousin.

While there, she will meet up with Colin, her French-Korean cousin whom she hasn't seen for 15 years, and who is now a member of a K-POP group - 3rd Star.

For our heroine, this will be an opportunity to visit Korea and immerse herself in its culture, but also to follow the group and immerse herself in the world of K-POP. Attending concerts, getting to know the members as men and not just as the stars she admired, and sometimes discovering what goes on behind the scenes.