Roi, a black goat spirit, faces torment from bullies until the moment he is rescued by the magnificent fire deity Xiu. Touched by this act of kindness, Xiu bestows upon Roi the power to transform into a human, leading Roi to pledge his loyalty to Xiu as his devoted servant. As Roi accompanies Xiu daily, a deep desire grows within him to transcend his role as a mere attendant. Plagued by insecurities about his appearance, Roi doubts that Xiu could ever harbor genuine feelings for him. However, a fateful event triggers Xiu's anger towards Roi, prompting Roi to contemplate what actions he must take to win back the favor of the fiery god.