After losing his mother in a tragic accident, Sejoon lives to support his father, who is physically and mentally incapacitated. He suffers from an inexplicable rejection of the pheromones of alphas, but his gratitude to his uncle, who has taken care of him since the accident, makes it difficult for him to refuse the unreasonable requests of his uncle's son, Jungwon. Sejoon meets Taeheon when he is dragged away by Jungwon as usual. However, after meeting Taeheon, he suddenly experiences a heat cycle that hasn't happened in years... "My instincts are telling me to hold on to this man."