Huh Young Dahl (played by Jang Dong Chul, Kim Jae Joong) learned of the identity of Yoon Yang Ha (played by Jang Dong Woo, Lim Shi Wan).
On the 20th episode of MBC Wednesday/Thursday drama "Triangle", Jang Dong Soo (played by Lee Beom Soo) revealed that fact to Huh Young Dahl that Yoon Yang Ha was his youngest sibling Jang Dong Woo.
Jang Dong Soo saw that Yoon Yang Ha was kicked to the side by the CEO (played by Kim Byung Ki) and went to see Huh Young Dahl. However, Huh Young Dahl was clueless and said, "Hey brother, I've taken care of Han Myung Jae (played by Jo Sang Goo) and had Yoon Yang Ha that jerk get out of the Dae Jung casino. Now, there's only Yoon Tae Joon and Ko Bok Tae (played by Kim Byung Ok) he boasted.
Just like this, Huh Young Dahl had revenge right in front of his eyes and was excited.
Meanwhile, "Triangle" is about three brothers that separate after losing his parents and live for twenty years without even knowing the existence of each other. As they reconnect as brothers, the drama portrays the story of their love and success.