The lord compels ChunHyang to sleep with him but she refuses because she is married. The lord gets angry so he decided to imprison her and punish her on his birthday. When Mongyong gets back and finds out what have happened to ChunHyang and the misbehavior of the lord. At the lord's birthday celebration, Yi Mong Yong comes in and makes a satirical poem about the misbehavior of the lord, but the lord does not understand the poem. Yi Mong Yong discloses his real position and punishes the lord.