Luna and her best friend, Franklin the dragon, love stories and want to visit all the places they've read about in books. But for all their reading they still don't know where dragons come from. And Franklin is now so old - 605 to be exact - he can't remember himself! They search high and low, but to no avail.

Until one evening, Luna's tortoise, Neil Armstrong, notices something far away in the sky... The three friends set out on their biggest adventure yet - all the way to the moon - in the hope of reuniting Franklin with his long lost family.