Hyesun a simple shy girl who transferred to a new school. Her first friend is Jiseung who happens to be a former student. Jiseung is the best friend of Taemin and Onew. Hyesun becomes a closer friend to Taemin and Onew because of Jiseung. Onew and Taemin have a lot of things in common and they are also best friends. Jiseung knows a lot about them. Soon, Hyesun admitted to Jiseung that she has a crush on Taemin so, Jiseung helps Hyesun to make Taemin fall for her but what happens is Onew falls for Hyesun first but Hyesun only LIKES him. Soon Hyesun decided who will she be with.

Onew and Taemin auditioned to be in a kpop idol group. They both passed and they were putted to the group, SHINee, with the three other members, Jonghyun, Key and Minho. Soon they debuted. While SHINee were busy with their promotion, Hyesun told the person she picked that she will just go on a vacation with her Dad in California. By the half of the vacation of Hyesun, she got into an accident causing her to have an amnesia. She only remember that she transferred to a new school and Jiseung was her only friend. She forgot about Onew and Taemin. Soon they went back to Korea

Since the one she picked got a lot of attention, he is busy with his solo promotions. Jiseung and the one she left were the only two who would always visit her and not the one she picked. So Hyesun falls inlove with the one she left since the one she picked is always busy.

What will Happen??