Dolphins at DaybreakIt's sink or swim for Jack and Annie when the Magic Tree House whisks them off to the middle of the ocean.Ghost Town at SundownIs this town haunted? Jack and Annie wonder when the Magic Tree House takes them to the Wild Wild West.Lions at Lunchtime"Where are the lions?" Jack wonders when the Magic Tree House whisks him and his sister to the vast plains of Africa.Polar Bears Past BedtimeIt's icicle city . . . when the Magic Tree House whisks Jack and Annie to the frozen Arctic.Vacation Under the VolcanoWho wants to vacation next to a volcano? Jack and Annie are about to find out when the Magic Tree House whisks them back to the days of the Roman Empire.Day of the Dragon KingWho would burn books? Jack and Annie find out when the Magic Tree House takes them back to ancient China.Viking Ships at Sunrise"Beware of Vikings!" warns Morgan. Then Jack and Annie are whisked back to ancient Ireland.