The Wind Blows to the Hope

In 1979, a bus containing criminals resulted in the prisoners escaping. 3 prisoners and Mutaguchi's treasures disappeared. What happened to these men and the treasure? In 2015, 36 years after the prisoner escape, Detective Jo Seonggi is still on the case. His junior Yang Gubyeong notices that the case is unusual and begins the investigation. What is the truth behind the 36-year-old case?