Magic Elements Quartet Series by Mallory Loehr

Nine-year-old Polly and her younger brother, Sam, find a corked bottle at the beach. Inside an ancient parchment promising three wishes. Before their adventure is over, older brother, Joe, will disappear and Polly and Sam will have to journey under the sea to et him back! The first book in the new Magic Elements Quartet combines magic and adventure in an easy-to-read format. A Stepping Stone Book.

On a trip to their grandparents' farm, Polly and Sam find a stone in the woods with a note that says, Please take care of my baby. Indeed, this is no ordinary stone. After they drag it back home, things they say around it start to happen all by themselves!

Three feathers.Three flights.Three feathers fall out of the sky and into the hands of three siblings. Exactly what they are supposed to do with the feathers Joe, Polly, and Sam don't know. That is, until they see the words written by the wind and magic is once again a part of their lives.

Fire Travel Directions, Part 1: With first light use copper, at daylight use gold, at moonlight use silver. This is the message the fire delivers to Sam, Polly, and Joe. But what exactly is fire travel, and where will it take them? Without fully understanding what they're getting into, the three kids prepare to follow the glowing parchment's instructions. But it's always dangerous to play with fire, especially when it's magic. . . .