Four orphaned siblings, led by the resourceful Henry (voiced by Zachary Gordon), take matters into their own hands when they fear being separated by the authorities. They discover an abandoned boxcar in the woods and transform it into a cozy, secret home, creating a new life for themselves through ingenuity and teamwork. As they navigate the challenges of independence, the youngest, Violet (Joey King), finds solace in her art, while the practical Jessie (Mackenzie Foy) manages their supplies. Their peaceful existence is threatened when a stranger, the kind Dr. Moore (Martin Sheen), begins searching for them, forcing the children to decide if they can trust an adult. This animated family adventure, directed by Daniel Chuba and Mark A.Z. Dippe, captures the spirit of resilience and the power of family bonds with a gentle, G-rated tone. Featuring the voices of J.K. Simmons and Jadon Sand, the story is a heartwarming tale of courage and belonging that will captivate audiences of all ages.