10 years ago, Banji and Baek-yeong, along with his three younger siblings, spent their happiest moments together. It seemed like time would last forever. But one day, it all came crashing down and Banji and Baek-yeong parted ways. 10 years later, the two fatefully meet again as coworkers, but Banji pushes Baek-yeong away. As for Baek-yeong, he is determined to reconnect with Banji because he doesn’t want to lose her again. Will Banji and Baek-yong be able to rekindle the relationship they once had?