The Doctor realizes that the filaments that Vida has been working with disrupt communication in the hive, and this might be a way to defeat them. He sends Mickey and Vida to find the crates that were on the "Ascendant" and dump them into the river, while he creates a distraction. At the same time, Rose, Jay, Huntley and the others start making their way toward the surface. Vida and Mickey are almost caught by the water, but Rose and the rest interfere, and then help them to release the filaments.