Cha Eun-kyung, a 17-year veteran divorce lawyer, faces a personal crisis when her own marriage is threatened while working alongside rookie lawyer Han Yu-ri, whose differing values lead to tension as they navigate their complex cases at Law Firm Daejung.
Seo Jae-won who suffered an unfortunate childhood, becomes an ambitious and driven CEO that chases after success. But when her obsession gets out of hand, she tries to escape from her unhealthy desires but her husband, a designer and college professor, gets swept up in the process.
Kwon Do-hun is an expert sniper and a secret agent working for the National Intelligence Service. To conceal his true identity, he lives a double life as a regular trading company employee, keeping even his wife Kang Yu-ra in the dark. Though he is occupied with his work, Do-hun cherishes his wife deeply. Meanwhile, Yu-ra, a dedicated homemaker, harbors a secret. Their tranquil existence is thrown into turmoil when Jo Tae-gu emerges, posing a threat to their carefully crafted façade.
Jang Na-ra (장나라) is a South Korean singer and actress active in both the South Korean and Chinese entertainment industries since 2001.