Although promised to the widowed neighbor Zeb, Emma is considering leaving her Amish community to watch over her younger brother Mark when he leaves for Philadelphia to explore the outside world during his Rumspringa.
There, she reconnects with her former beau Caleb, who protects the Amish teens, introducing them to his life evangelizing and helping the homeless. Unbeknownst to Emma, Caleb is glad for the opportunity to spend time with her and hopes to win her back.
Struck by the power of evangelism and outreach, Emma begins to feel a draw to Caleb’s way of life. When she doesn’t return home when she promised, Zeb goes to the city to find her, forcing Emma to choose in which of their two worlds she really belongs.