Cain and Abel is a South Korean drama series based on the famous story of brothers Cain and Abel found in the Bible. The story focuses on two brothers who have anything but your typical loving brotherly relationship. Younger brother Lee Cho (So Ji-sub) is a very talented doctor who is great at everything he tries to do. He is successful in all areas of his life and is well-respected by everyone who knows him, except his older brother Sean Woo (Shin Hyun Joon). Sean Woo, who is also a doctor, has always been jealous of his brother and has been very envious of all the success he has had. He blames his brother and he holds a lot of anger towards his brother for what he perceives as stealing his father's love. Sean Woo's loathing for his brother intensifies as they are both attracted to the same woman but she falls in love with the younger brother Lee Cho.