Su-ae Shim knows that dating someone who won't give you the time of day is tough, having dated her indifferent boyfriend Minu Kang for years. But when she catches him kissing her charismatic stepsister, her world shatters. To make matters worse, she discovers that the amount of love she's destined to receive in her lifetime is zero. Now, Su-ae must find a way to change her pathetic fate with the help of a mysterious sentient phone and an unlikely ally—her boyfriend's friend, Eunhyeok—before her time runs out.
