"I don't know what life is! Am I living a good life?" Questions about my life that everyone has probably thought about at least once! Entertainment's representative 'Dog Zodiac' stars have gathered to find answers to those questions and conduct a mid-life check-up! Exactly halfway through the 100-year era! What answers will they find as they turn 50? Through the questions posed each week and the process of finding answers, they will reflect on their lives.