Tanit, Valeria and Shaila are three women from very different parts of the world who face the same problem: climate change. They will lose everything because of global warming effects and they will be forced to emigrate to survive.

In 1886, orphaned Irish siblings Mary and Tom arrive in New York City via ocean liner, and quickly find themselves on a wild, cross-country journey aboard a transcontinental 'Orphan Train', where they meet an extraordinary new friend who will change their lives forever.