Yin, Yang, Lina, and Roger Jr. are bored out of their minds until a mysterious mail carrier (Smoke, in disguise) gives them a coupon for a free vacation to an island. Even though they all figure that it's probably a trap, they go anyway, since it will be more exciting than what they have been doing. Dave insists that he comes along. But when they get to the island, not only does it turn out to be a trap, it turns out to be a much better trap then they expected it to be, and everyone except Dave ends up getting captured by Smoke. Now it's up to Dave to find a way to defeat Smoke and her three evil hench-creatures.