When a K-POP idol falls in love with an ordinary college student struggling financially.

In this world, there are extremely powerful amulets that humans can obtain and control and use to whatever extent. Of course, there are limits, but to an idol (who are humans with powers of their own), it's unlimited. Meanwhile, Seulgi is an extremely poor girl who lives with her family in a small hut out in the countryside. One day, while she is planting apples trees, she digs up an old and rusty amulet. And ever since she found that amulet, her life has changed drastically.

Seulgi and Irene had always watched the sunset before they go to sleep. They promised to watch it until they die. One day, Irene had died in a car crash and left Seulgi devastated. Seulgi then promised herself to touch the sunset for Irene, as she wanted to see Irene one last time.