This drama is about four female inmates in Room 10 of the Chungjoo Women’s Prison who are charged with murder, fraud, stock manipulation, and attempted murder. These Four women are Moon Soo In (Han Ji Hye), Shim Bok Nyuh (Go Doo Shim), Son Poong Geum (Oh Hyun Kyung) and Seo Mi Oh (Ha Yeon Soo).
After being released, with the baking knowledge learned from the prison, they join to open a bakery shop which eventually compete against a large bakery company run by a conglomerate.