Eric and his friends are headed to Droon's far north, a forbidding wasteland of ice and snow. There they seek the truth about a mysterious treasure, a snowflake with magical powers that fell to the earth from a strange flying blue serpent. The kid's journey is filled with danger, for Ko will stop at nothing to get the treasure and every step north brings them closer to fulfilling a terrifying prophecy that could change the future of Droon forever.