To avoid an arranged marriage, Lin Zhao disguises herself as a man to take her older brother's place in school, and by a twist of fate ends up living in the dormitory of her brother's mortal enemy, Chi Jibai. While sleepwalking at night, she accidentally kisses Chi Jibai forcefully, and her identity is exposed as a result. Just as Dong Zhenzhu comes over to force a marriage, Chi Jibai seizes her secret as a condition, demanding that Lin Zhao pretend to be his girlfriend to attend a family banquet, thus starting a contract romance of extreme tug-of-war between the two.