影片讲述了关于“三代人”、“七里地”的故事。为生存而来，为梦想而走，为寻根而归的贺岁短片。
Two sisters living separate lives on different continents are reunited on a Mediterranean Island. The two barely have time to bond and revive family ties as Kate, the elder, meets a group of locals and agrees to an exciting ride on a hot air balloon. But disaster strikes and as the result of a freak accident, the balloon is carried far out to sea. Their cell phones out of range, and the balloon running out of gas, Kate and her friends are battling for their lives. While, back on land, the younger sister, Liz, has become an unwanted "material witness" to a crime. Matters then take a dramatic twist, one that will mark their lives forever.
大陆客，两大一小三糊涂，出海打天下，失去了方向，来到了台湾，此时李师哥、郑师弟和毛弟三人卷入一场绑架勒索中，糟糕的是，他们居人绑了坏人；原来在此地的国际训练营中，东洋女童圣子，参加暑训，而他父亲熊谷一郎是医药技师，可以提炼安非他命，於是龙老大派手下绑架圣子，迫使就范。碰巧李诗哥级郑师弟打算绑架致富，见龙老大手下华车美服，误认为金主，访而将坏人绑入黑帮。立一方面，毛弟认识了训练营的小朋友，得知师姐被绑，大家决定以本身所学救出圣子…
