I really enjoyed watching part 1. Part 2 was good until the ending. All the actors did really well! I especially liked how each character developed and became a team player. Despite the unsatisfactory ending the whole drama was great. Although i wished the writers /producers could have explained what happened to the sergeant wonbin since he clearly looked alive in part 1 ending and why didn't the monitor thingy detect anything at the hospital.
Also i enjoyed the funny music video clip at then end that was really funny but sad at the same time.