Lancelot, the knight on the lake, is brave, powerful and helpful, gentle and courteous. He was one of King Arthur's greatest Knights of the Round Table and the brother of King Arthur's adoptive father, Knight Ector. He is a loyal and capable knight of King Arthur, but he is unlucky and has no luck. ? Li Hu, a modern fencer and the noble son known as the "First Knight", accidentally encountered an accident while on vacation with his sister. Across time and space, he becomes a sighing knight in the future. Can his destiny be changed by him? Hold the sword in your hand, be loyal to the king in your heart, swear on your life, and defend the glory of the knight! Note: The settings are borrowed from other King Arthur fan works (such as "Knight Fantasy Night", etc.), The background is a parallel world, and it does not conform to historical records. The CP is purely for entertainment, and those who are outrageous are not allowed to enter.