Switch: Change the World Episode 21

Joon Soo isn't well due to the damage to his heart caused by the car accident. Unable to go through with the plan, Joon Soo asks Do Chan to do another switch. Do Chan agrees and assumes the role of Joon Soo once again. Tae Woong begins to get suspicious of Joon Soo and decides to test his loyalty in various ways. He wants Joon Soo to end Jung Pil. Meanwhile, Do Chan meets with Jung Pil as Joon Soo and hears about a business investment in Turkmenistan. (Source: Kocowa)