Xiao Shou transmigrates into a cultivation world and discovers he is only a minor supporting character destined to be used and discarded in the main plot. To survive, he awakens a special ability called Absolute Fusion, which lets him combine items to upgrade them into higher-level treasures.

Avoiding the dangerous main storyline involving the heroine and a transmigrator, he quietly cultivates in a hidden location. By fusing spirit stones, pills, techniques, and rare treasures, he grows stronger at an incredible speed.

As powerful cultivators and fate itself begin to close in, Xiao Shou refuses to become cannon fodder. He will use his fusion ability to rise step by step and change his destined ending, becoming strong enough to control his own fate.