My 20th Twenty

So Won, a high schooler, is about to turn 20 in a couple of hours. She meets someone and gets under a curse.

So Won looks for the woman who put her under the curse after getting a clue only but gets frustrated.

So Won joins Hanhwa Resort and starts to live in the dormitory, where she meets roommates of her age.

So Won tells Kang Hyun about the witch. Min Ji also runs into the witch after failing to get promoted.

Sang Wook starts to show his feelings for So Won. So Won tells Min Ji about the witch and the curse.

Kang Hyun discovers So Won, who is locked up in the storage, and takes her home, where they kiss.