Aven's life was a series of tragedies. Losing his parents at a young age and being betrayed by friends in business left him devastated.

However, everything changed when he met a girl whom he deeply loved. Sadly, she was struck by a rare, deadly disease, and despite his helplessness, she passed away before his eyes. Her death shattered his will to live, but he held on due to a promise made to her.

Fate took another turn when Aven faced a fatal accident, leading him to awaken before godlike beings who found his life to be mere amusement. Learning that these beings were the cause of the girl's death, Aven's soul shattered, cast into a void.

After millennia, he encountered beings claiming to be Lords of the Abyss. Seeking their help, he was granted a chance for revenge. Aven was provided with a devil as an assistant and tasked with venturing through multiple worlds.

His mission: to prevent the trial of the Karmic Vessel, also known as the 'Son of Heaven,' where beings stored their bad deeds. To accomplish this, he could gather strength from each world, empowering himself to confront those responsible for his plight.

His journey began in an Urban Cultivation world, selecting the body of the wealthiest man to amass strength. With his newly acquired physique, capable of converting medicine energy into internal power, he embarked on cultivation.

Saving a woman from a fatal disease, who happened to be the mother of the 'Son of Heaven,' became his means of control. By making her fall for him, Aven gained a child and continued his journey. His path would take him through diverse worlds—Post-apocalyptic, Otome, and more—each posing its unique challenges and themes.