天庆三十三年，李、宋两位太医奉天庆帝之命历经磨难寻找神药“无果”，却意外酿成大祸，两家亦因一桩盗药误会深仇暗结。多年之后，神医李阔后人李时沦落为落魄兽医，不曾想竟因在合欢楼成功救人性命而在坊间一战成名。与此同时，仇家后人宋茹雪改名换姓暗藏李时身边伺机谋杀，却不料意外受伤，在相处照料的过程中，二人心中互生情愫。手握前辈留下的寻药日记，李时与三叔李一峰、宋茹雪踏上寻觅失传已久的神药“无果”之路，三人各怀小心思，一路囧事不断，随着合欢楼头牌女子梦梵、女掌柜迎春花身份真相大白，天庆帝意外起死回生，当年的谜团终究被一一揭开……

One script, two screenwriters, three revisions, four seasons change, five flavors mixed. According to legend, during the early years of the Ming Dynasty, General Chang Yuchun headed north with his army and established a campsite that later became known as "Chang Ying." Several hundred years later, a group of young people also stationed there, dreaming of becoming directors, screenwriters, actors, producers, and more. Among them were two screenwriters, Zhang Liao and Sun Tan. They wrote a movie script that they believed would go down in history and were determined to bring it to the big screen.