Moon River S01E03 - Heungbu, Nolbu, and Swallow

After finding out U Hui is the Left State Councillor's daughter, Grand Prince Je Un decides to let her go. U Hui demands that Gang personally fetch her from Sinjusa Temple, so Gang heads to the temple. On the way, Gang meets Dal, who was also headed to Sinju Temple. Upon Gang's arrival, mysterious assassins storm into Sinjusa.