They grew up like brother and sister. Park Ri Hwan (Lee Dong Wook) and Kim Haeng Ah (Jung Ryeo Won) have been best friends since childhood. Haeng Ah’s parents died when she was young, and she was taken in and raised by Ri Hwan’s wealthy family. Ri Hwan is now an oriental medicine doctor who runs his own medical clinic. Haeng Ah works as a radio producer. Although Ri Hwan and Haeng Ah have always had feelings for each other, they have kept their emotions in check because of Ri Hwan’s disapproving mother. The chaebol daughter Hong Yi Seul (Park Hee Bon) is considered more of a suitable match for Ri Hwan. Meanwhile, Haeng Ah’s boss at work is Kang Suk Joon (Lee Jong Hyuk), her ex-boyfriend who wants her back. Will Ri Hwan and Haeng Ah do what is expected of them and choose other mates? “Bubblegum” is a 2015 South Korean drama series directed by Kim Byung Soo.