What would you do when you find out you're just a substitute lover? The first time Walter Rodriguez meets Alvina, he realizes he has found the perfect double. The person in front of him doesn't need a name, just to stay with him as a stand-in lover. He could satisfy all her needs, whether it was money or status, except to be her mate. It is very fair for both of them to take what they need. However, when he knew that Alvina was the girl that his brother used to like, Walter suddenly remembered those details that he had overlooked, such as Alvina would subconsciously call him by his surname when she was in love, and Alvina always forgot that his wolf had no pattern at all in the corner of eyes. And Alvina was not a renegade slave at all, she was the daughter of the chief of the northern wolf pack, her brother's former fiancée. It turns out that he was the substitute lover, and the dazzling red color never belonged to him.