“If you’re in love, Love Alarm will ring, If you’re in love, you cannot hide your feelings.”
As Love Alarm, an app that tells you if there’s anyone who has a crush on you within a 10-meter radius launches, it quickly becomes a social phenomenon. While everyone talks about it and uses it to test their love and popularity, Jojo is one of the few exceptions as life itself is an uphill battle every day for her. However, Jojo soon faces a love triangle situation between Sun-oh, whom she is fond of, and Hye-young, who has had a huge crush on her.
Kim Jojo, played by Kim So-hyun (Who Are You: School 2015, Hey Ghost, Let’s Fight, Radio Romance) is a girl with positive spirit despite some painful family history, and she finds a new love by using the app. Hwang Sun-oh, played by a new face Song Kang, likes Jojo, and he has it all. He has the look of a model and grew up in a rich family. Lee Hye-yeong, played by another rookie actor Jung Ga-ram, is good friends with Sun-oh, and he also likes Jojo, even before Sun-oh.
Love Alarm is based on a popular Korean webtoon of the same title by Chon Kye-young, whose other works like Unplugged Boy and Audition have a strong following in Korea.