How can a vacation by the sea become an adventure of a lifetime?

A fun-loving sister and brother discover a magical world of sandy beings

and the adventure begins!

It's summertime for Julie and Tyler, and that means a whole month at

Grandpa McCrabbe's seashore lighthouse in South Carolina! This year,

though, Grandpa has a secret-and it's up to sister and brother to find it out.

From exciting chases, to awesome cave ceremonies, and powerful hurricanes

Julie and Tyler discover a magical sandy world, the amazing Sandrops that

live there, and a lesson about friendship that they will never forget.