Georgia and her twin brother, Adam, can't wait to go on vacation to the beach — especially since they're taking their lively puppy, Lucky, with them. Lucky loves running along the shore, playing in the waves, and digging in the sand. All these new things are even more fun that chasing squirrels! And Georgia and Adam are looking forward to taking him out on their own for the first time ever. But their walk along the cliffs turns out to be even more of an adventure than anyone could have imagined.