A Killer Paradox

Six young people from New York City, on their own and struggling to survive in the real world, find the companionship, comfort and support they get from each other to be the perfect antidote to the pressures of life.

Love Alarm is an app that tells you if someone within a 10-meter radius has a crush on you. 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 people who have yet to download the app. However, she soon faces a love triangle situation between Sun-oh whom she starts to have feelings for, and Hye-young, who has had a huge crush on her.

After meeting an untimely demise in separate incidents, Cha Min and Go Se-yeon discover they’ve come back to life in new bodies they don’t recognize.