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.

Nu Ri, Kang Hyun’s ex-girlfriend, visits the resort to see Kang Hyun. Sang Wook and So Won have dinner.

Nu Ri tries to get back together with Kang Hyun. The witch visits So Won’s roommate and makes an offer.

Sang Wook and So Won talk about love in the comic book store. So Won and Nu Ri fight at the office dinner.

So Won finally meets the witch, but the doctor says the witch has Alzheimer’s. Nu Ri wants Kang Hyun back.

The witch says So Won can become 41 once the curse is lifted. So Won and her friends hold a farewell party.

Kang Hyun and Sang Wook are waiting to hear from So Won. Min Ji left the resort and founded her own company.