Lucas, the feared ruler of the underworld known as Satan, disappears into obscurity after losing his wife, disguising himself as a poor janitor. When his daughter, Emma, is pressured into a forced marriage by David and his wealthy family, Lucas unexpectedly meets Emily, a powerful tech CEO, and the two fall in love at first sight. But when Lucas visits Emily's home, Nola and her son humiliate him for his lowly status. After a rival, Hudson, sees his marriage plans collapse, he kidnaps both Emma and Emily to force them into submission. At the critical moment, Lucas reveals his true identity as the legendary Satan and unleashes his immense power, crushing the gangsters and striking back at every wealthy family that once looked down on him. With the underworld's elders bowing to his authority, Lucas also helps Emily's company absorb its business rivals. In the end, he marries Emily in a grand wedding and finally finds peace and happiness with his daughter and the woman he loves.
