You will Watch Transformers Prime Episode 4 online for free episodes with HQ / high quality. Stream cartoons Transformers Prime Episode 4 Darkness Rising, Part 4. Optimus Prime and Ratchet fight an army of undead Cybertronians. Meanwhile, noticing that Miko followed Bulkhead Jack and Raf use the Spacebridge to find them. This means that the Autobots and Decepticons have an allout battle. Later, the humans find some Decepticon plans and take a picture of it. The Autobots save General Fowler and leave the Nemesis. Optimus and Ratchet destroy Megatron’s army and Megatron tells them wait for “the main event.” Miko shows Ratchet the Decepticon plans that they found. Studying the plans that Miko found, the Autobots discover that the Decepticons are building a space bridge so that Megatron can send the Dark Energon to Cybertron in order to raise an army of Cybertronian zombies to attack Earth.