A couple's adulterous affair leads to an unexpected pregnancy. They leave their spouses to begin a new life together, but their daughter Katelyn is born with a birth defect: only one fully developed arm. Although her dad believes Katelyn's condition is God’s punishment for the affair, Katelyn defies all odds with an incredible gift for softball.

David's comfortable world is turned upside down when his birth mother Melissa unexpectedly reaches out, longing to meet the eighteen year old son she's only held once.