When Karla their father Hans in Mallorca brings to a clinic because he was stung by a bee, it does not look good for him. The doctors want to find just a normal bee sting, what Karla does not consider it feasible. Together with the researcher Ben she gets down to find the true culprit — and finds an over-sized bees, which also is also extremely aggressive. This new insect species is a major threat to thousands of people on the holiday island.