OS

While tracking a crime syndicate led by a powerful boss, prosecutor Go Eun-sae is involved in an incident that causes her to lose her memory. She subsequently encounters Jang Tae-ha, a former youth boxing champion turned gang member who is working as a small-town coach. Tae-ha recognizes Eun-sae as his first love, but because she has no recollection of her past, he claims to be her boyfriend to protect her, leading the two to move in together.