Triangle

When three brothers were very young, they lost their parents. The three brothers were then separated and lived apart for 20 years without knowing of each other. They then meet again unexpectedly and begin their relationship as brothers. Jang Dong-Soo (Lee Beom-Soo) is the oldest brother. He works as a detective. Jang Dong-Woo (Siwan) is the youngest brother. He was adopted by a rich family when he was a baby and became Yoon Yang-Ha. He is cynical and cold.

• Choi Jung-kyuDirector
• Choi Wan-gyuScreenplay

• Kim Jae-joongHeo Young-dal / Jang Dong-chul
• Yim Si-wanYoon Yang-ha / Jang Dong-woo
• Lee Beom-sooJang Dong-soo
• Oh Yeon-sooHwang Shin-hye
• Baek Jin-heeOh Jung-hee
• Park Ji-yeonSung Yoo-jin
• Kim Byeong-okKo Bok-tae
• Kim Hye-eunKim Ok-kyung
• Moon Jung-hyunMin Su
• Hong Seok-cheonMan-kang
• Kim Ji-youngOh Jung-hee's grandmother
• Park Hyo-juKang Jin