A mountain youth, following his master's orders to descend the mountain and carrying an old marriage agreement, headed to Haichuan Group to fulfill the engagement, only to have the marriage agreement torn apart in public and face all kinds of humiliation. By a twist of fate, he happened to meet the critically ill old master, using his medical skills to lock in the old man's life and taking marriage as a condition for treatment. A marriage agreement went wrong and came true by a stroke of luck, and the young man gifted with exceptional skills thus stepped into the bustling metropolis, starting his counterattack story.