寄住在工务店的木匠大西胜男（江口洋介饰演），是个热血直爽的好青年。当他得知大学学长因火灾意外去世、夫人也昏迷不醒，便毅然决然领养学长的四个孩子，一夕之间从快乐单身汉，摇身一变成为超级奶爸！

江口洋介面对个性迥异的四兄妹：态度冷淡的健太（二宫和也饰演）、超级模范生小桃（上户彩饰演）、喜欢恶作剧的康太、温柔可爱的良太，再加上工务店刚离婚的女儿珠美（内田有纪饰演），在这充满人情味的老街，展开了热闹温馨、波澜万丈的家庭喜剧！

Eguchi Yosuke plays the character of Onishi Katsuo, a 35-year-old carpenter and former college football player who sees life almost in the same balance as a football game (guts and glory along with team spirit). One day he learns that his friend (a college football teammate) was killed when his house burned down. His friend's wife is in a coma and his four kids are now homeless, Eguchi has the children live with him (in his one room apartment) above his bosses home.