Ye Daji meets an old classmate, Ming, who asks him out for coffee but makes him pay for a big meal instead. When a vagabond walks in and is chased away by the restaurant manager, Daji speaks up for him and even gives him a treat. Daji is sad when his girlfriend, Jiexi, turns down his marriage proposal again. Ye Da is a divorcee with a 10-year-old son, Xie Tingfeng. She lives with Daji and teaches martial arts for a living. As she has few students, Daji tries to stage fights to show off her skills.

叶大吉年约40，心地善良，喜欢唱歌。大吉生性勤俭、口齿伶俐，为人虽富正义感，讲话却稍嫌刻薄。大吉向女友洁希求婚，可是洁希都不肯点头，要大吉加上她的名字进他的户口，她才会有安全感。大吉豪爽答应，马上就带着洁希进银行处理，洁希这才转怒为喜。 某天，大吉赶着去送货，不小心竟然把一名老汉王友国给撞倒了。大吉想要赔钱给友国了事，可是却被友国拒绝。友国要求大吉让他住进他家，证明他没有受到内伤，这事才算了结。大吉无奈，只好照办…… 洁希过后提光大吉的储蓄，人去楼空……