Meet Myoui Mina, a renowned and relentless detective based in Tokyo, Japan. Known as "The Hellhound," she's earned a reputation for her blunt, merciless approach to solving cases, She has the highest closure rate in the past decade. Despite her success, Mina's unorthodox methods have garnered as many enemies as admirers.

Her obsession is "The Fate," a notorious criminal who has eluded her grasp for years, marking the only stain on her otherwise impeccable record. When Mina is transferred to Seoul, South Korea to continue her pursuit, 

She finds herself partnered with Im Nayeon, a cheerful and outgoing detective who is her polar opposite in personality, and Son Chaeyoung, a quirky and endearing forensic scientist whose intelligence and charm quickly captivate Mina. 

As the hunt for "The Fate" intensifies, Mina must navigate her professional reputation, her complex relationship with Nayeon, and her unwanted attraction for Chaeyoung. Will she finally capture her elusive target, or will her personal demons unravel everything she holds dear?