The happy citizens of Yoshi's Island were shocked to discover a mysterious island floating above them. What's even stranger is that kids began vanishing from the island school. Yoshi must round up Baby Mario, Baby Peach, Baby Donkey Kong and Baby Wario to get the kids back and investigate the mysterious floating island. Whenever Yoshi carries one of the children on his back, he can use unique powers, such as super speed or strength. They do battle with classic enemies, as well as new ones. The game makes use of the DS dual screens to show you even more of the lush landscapes on Yoshi's Island, adding to the entertaining gameplay.