Shin Rin-ah

A woman whose son went missing a few years ago believes her son is still alive. She believes her mother-in-law with Alzheimer's might know where he went. The family moves near Mt. Jang, where the mother-in-law grew up, thinking that it might improve her health. What they didn't know is that the mountain is inhabited by Jangsanbeom, a mythical creature known to mimic people's voices and use them to lure other people.

After being diagnosed with a possibly terminal brain tumor, Kang Hye Soo, a desperate single mother, agrees to be a liver donor for her new boss’ mother. In exchange, she will receive a significant sum of money that she hopes to leave to her daughter. In order to pass the screening process, they must legally wed and convince the hospital that they’ve been in a long-term relationship (mydramalist.com)

A prosecutor has lost his memory and discovers that he is convicted on death row. He is now left with no option but to find the truth behind his condition and prove his innocence. (imdb)

It tells a story about a bar owner and an abused child joining forces to maintain possession of a money bag they pick up serendipitously. Madam Jung is a bar hostess and Eun Mi is her partner-in-crime, a child abused by her stepfather and used as a money-making tool by her mother.