My Secret Boss Dad

He was a war hero who saved his country in a time of crisis. But while he was away, his wife died unexpectedly, leaving behind their daughter. To seek the truth, he hid his identity for 15 years, but also unawaringly neglected his daughter's care in the process. As she grew up, she decided to marry a worthless man. How does the seemingly disabled, street vendor father save his love-struck daughter step by step, and find out the traitor who betrayed his country and plotted against his wife?