我单纯的兄弟

本（弗雷德里克·劳 Frederick Lau 饰）和大卫（大卫·史崔梭德 Devid Striesow 饰）是情同手足的兄弟，两人和母亲过着相依为命的生活。和普通人不一样，大卫虽然表面上是一位22岁的青年，可是他的心智却如同三岁小孩。这么多年来，本和大卫之间的感情非常的要好，在生活的方方面面，大卫都得到了本的精心照拂，如果没有本，大卫可能会过上和现在有着天壤之别的生活。 　　一场意外中，两兄弟的母亲过世了。按照法律条款，大卫要被送到福利所，他在那里的日子可想而知，于是，本带着大卫踏上了旅途，他们的目的只有一个，那就是寻找他们失踪多年的亲生父亲。Ben and Barnabas are unseparatable since they are small. The two of them, however, are no ordinary pair of brothers, for Barnabas, with his twenty-two years, remained mentally at the age of three. This also gave him the nickname "Simpel". But even if Simpel is a terrible nuisance, Ben can never imagine a life without his brother. But then the fate unexpectedly kills cruelly when her mother suddenly dies. Afterwards, Simpel is to be sent to a home, but the brothers do not allow that. Together, they flee and spend one night outdoors. Then Ben's dawn: To help Simpel, they have to meet the one person they have not seen for 15 years - their father...