preview: moon lovers: bo bo kyung shim: ryeo episode 18
Yeon Hwa is determined that her (future) son with So will be the next king. So is furious Wook is manipulating him. So tearily promises Soo that to him, she is the only queen in his heart. Ji Mong asks Soo to give up on So (as in not to marry him, I figure), leaving Soo conflicted. Poor So.