An island where plants were genetically modified becomes void of human life when the plants begin attacking its people, and turning them to dust. The SeaQuest is sent to investigate, and-unaware of the danger-Henderson picks a flower from the mysterious island. Once on the ship, the flower proceeds to grow and take over. Meanwhile, Lt. Brody and a few others are attempting to destroy the plants on the island. Darwin, who has been acting strange, asks Captain Bridger for more light, and he gladly obliges. When the plant begins to take over the ship, it heads towards Darwin's moon pool. Once there, it seems to die, and Bridger then realizes that the plants are killed by an excess of light, and relays this to Brody, who puts a plan into action, and saves the day after a short struggle with the enormous, monstrous plant-life.