With the Emerald and Ruby now reunited with the Scepter of Harmony, the rebellious group of children intent on overthrowing the malevolent King Argyle must face a new challenge: recovering the Sapphire of Poseidon. In order for the full power of the Scepter to be restored, the jewel must be inserted back into the staff. With Argyle now at war with Queen Kyrie, and his ships scouting the lake to locate her, as well as the realm of the Merfolk, the small band of insurgents must find a way to cross the Great Lake while avoiding not only Argyle's fleet, but the kraken he's released in an attempt to draw the Queen of the Lake into battle. Time is running short as Argyle is sure to figure out their plans for bringing together all the pieces of the Scepter. Once he does, it'll be a race to recover the remaining gems, and if Argyle finds one first, the fight, and the kingdom, will be lost forever.