Baek Su-jeong leads a planning team at a renowned department store. She meets her new boss, Ban Ju-yeon, her first love from an online game 16 years ago, stirring up memories of when he confessed his feelings but she rejected him.

Min Jun's mundane office life is disrupted when his ex-boyfriend, Jin Hwan, joins his workplace after 8 years. As Jin Hwan charms their coworkers, Min Jun struggles with their past and Jin Hwan's attempts to reconnect.