The prince of Shu wants to marry Yao Mo Wan before they will withdraw their soldiers. There is a famine and everyone is running out of food, causing trouble with the troops and civilians. Ye Jun Qing doesn't agree to the terms, but Yao Mo Wan agrees to the marriage and goes there alone. Ye Jun Qing kills the envoy and prepares for battle. Yao Mo Wan meets with Ye Jun Qing and convinces him to agree to the marriage for the greater good. Ye Jun Qing attends the wedding of his love with another man. Ye Jun Qing makes a toast. Everyone drinks and then falls unconscious. (Source: jindreame at MyDramaList)