The heroine is the founder of an Internet company in 2112. Due to high pressure, she dreamed of going back to the Qing Dynasty while taking a lot of sleeping pills and falling asleep. She has always wanted to travel back in time, and during the process of time travel, she entered a popular game in 2017 called "Cross the Dynasty". The hero is an advanced player who traveled through the dynasty, and helped the heroine to successfully travel through time. Unfortunately, the heroine did not go back to 2112, but to 2017. As a result, the two met and fell in love.