The only surprise in this world is that after playing with the protagonist's heart and then discarding the protagonist, the protagonist comes back.
In this world where knights are the protagonists, Andrew travels through the past and plays everyone around the protagonist - princes, princesses, friends.
Until the play was taken off - the protagonist confessed his love.
So this is the story of Xiao Shou trying his best to get rid of Xiao Gong, but Xiao Gong turns evil.