Jack moves to town with his daughter, who is obsessed with rainbows. His daughter becomes a student at the new school where she gets Lucy as teacher. Jack and Lucy encounter each other in various situations, and Lucy begins to introduce him to the town and also to the private garden where her parents got married and where you can sometimes see the rare moonbow.
A fairly standard romantic movie, but the rainbow theme becomes a bit ridiculous. It's worst when they arrive at a field filled with rainbows, and it's not even raining.