Master in the House

Almost everyone has a question regarding life and the goal of life. In order to find the answer, the four young men with full of curiosity regarding their lives, Lee Seung Gi, Lee Sang Yun, Yuk Sung Jae, and Yang Se Hyung, head to find their master to learn things and get a correct answer. They find the master and spend a day in the master's place to learn things that they didn't know, and wish to know. Whom will they get to meet? And what will they learn throughout the stay?