It's a comedy set in 2022, mainly in Berlin, Germany, with a few scenes in Pennsylvania. It follows an Amish teenager, with his family's blessing, taking his rumspringa time in Germany.
Jacob Hostetler (Jonas Holdenrieder) is the hapless Amish lad sent to Germany along with the Hostetler's family Bible. After his rumspringa, he must find some distant German Mennonite Hostetler relatives to learn more about his ancestry. However, when he arrives at the airport in Berlin and hails a taxi, through a mixup, Jacob loses his money, belongings, and Bible as he politely allows a young woman to have the cab.
Jacob wanders Berlin's streets until he sees a young man he initially thinks is Amish because of his suspenders, beard, and lack of mustache. He follows Alf (Timur Bartels) around until finally, Alf offers him a place to stay for a short time. Alf is an architecture student preparing for a major exam. Jacob meets Alf's roommate, Bo (Rauand Taleb), and Alf's girlfriend, Freja (Tijan Marei). He also eventually meets the young woman who had left in the cab with his possessions. Ina (Gizem Emre) is an artist and becomes Jacob's romantic interest.
The film follows Jacob's introduction to European culture and the response of his new friends to Jacob's simpler approach to life. Eventually, Jacob needs to decide whether to return from rumspringa to Pennsylvania.
"Rumspringa" has some positive aspects. Alf, Freja, and Ina appreciate aspects of Jacob's culture and background. Some of the cross-cultural humor is funny, but some veers closer to mocking Amish naiveté. It's a thin line as Jacob's list of the "sins" he has committed--ranging from roller skating to sex--becomes a valuable piece of art. There is little attempt at Amish accuracy, but that's not the point in a German comedy. One wonders if this kind of comedy would be made of other visible conservative minority groups. But some of it was funny.