Starscream, using his new Quintesson powers gained from his encounter with them, incapacitates the Transformers, thwarting any escape plans they initiate. While he judges some Transformers, Optimus, Bumblebee and an injured Wheeljack escape into the multiverse. Meanwhile, Windblade heads to Maccadam's, fights off the Quintesson Sharkticons and fully awakens Iaconus with assistance from Maccadam. In response, Starscream summons a brainwashed Croaton to attack Iaconus. Amidst the battle, Maccadam frees the captives before getting killed by a stray blast from Croaton. Starscream then uses Unspace to decapitate Iaconus' head and sends Croaton to destroy Iacon city. Optimus, Bumblebee and Wheeljack return from the multiverse and confront the Quintesson Scientist, with Wheeljack locating the Scientist's real body and killing it before Starscream attacks Optimus's team. As Starscream prepares to kill all Transformers, Megatron returns from the multiverse with Dead End, the newly recruited Insecticons and a Decepticon shuttle named Astrotrain to assist everyone using his newly gained multiversal powers. Windblade frees Croaton from the Quintessons' control, but the strain of the task fragments her consciousness which scatters all across Cybertron. Megatron reveals to Optimus that he obtained another Matrix of Leadership from the multiverse. Using the combined power of their Matrixes, Optimus and Megatron destroy Starscream for good. Following the battle, Megatron orders a ceasefire and that both Decepticons and Autobots will possess one half of Cybertron each.