"We Broke Up" tells a story of a couple who happen to live together after their breakup. Sandara Park plays No Woo-ri, a bright and ambitious girl who struggles to land a job while Kang Seung-yoon plays Ji Won-yeong, an indie band’s vocalist who works part time at night. Hyoni Kang will appear as a confident career woman who runs the nation’s top music label, and Cang Ki-yong will play the role of the couple’s college mate.

• Kang Seung-yoon
• Sandara Park
• Kang Seung-hyun
• Jang Ki-yong
• Lee Beom-kyu
• Bae Jung-nam
• Lee Se-young
• Kim Kyu-Ho