“I Wanna Hear Your Song” is a mystery romantic comedy about a timpanist named Hong Yi Young (played by gugudan’s Kim Sejeong), who loses all memory of the night of a murder. After encountering a suspicious tone-deaf man named Jang Yoon (played by Yeon Woo Jin), she suddenly finds her forgotten memories returning, and she sets out on a quest to uncover the truth.
The clip opens up with Yeon Woo Jin and Kim Sejeong gathering at Namsan Tower for filming. Kim Sejeong greets the camera with high spirits, and she channels her character Hong Yi Young by complaining, “Yoon dragged me here. I didn’t want to come. Yoon is evil. Please film Yoon being so carefree.”