What would you do if you have to let the one and only family member go? Minsu decides to marry the love of his life but the moment he proposes, the bride to be reveals the truth that has been hidden from him. She is allergic to dog saliva and took medicines when she had to meet Minsu’s little brother Runie, the golden retriever. The happiest moment suddenly turns out to be the one that needs a life-changing decision.