Magmatron has posted a summary of the events which take place in the Season 2 finale of Transformers Animated over on TFW2005. Below you will find a mirror of the screenshot he took as well as a cleaned up version of the summary. For those wanting to watch videos, he has posted two videos, without sound and with a large watermark, on YouTube, here and here.

Spoiler warning

The episode begins with Starscream's brigade attacking both the Autobots and the Decepticons, who team up to defeated them. The Decepticons then defeat the Autobots when Ratchet arrives in the Autobot ship. Activating some secret controls, the ship transforms into Omega Supreme. Megatron's decides that he needs to test the Spacebridge and throws a restrained Optimus Prime towards the portal. Prowl manages to free Primes hands just in time so that the Autobot leader can save himself. Realising that he needs more power to use to Spacebridge, Megatron decides to hook up Starscreams head and use that as a battery. The power overloads the SpaceBridge and begings to suck everything into it, starting with Megatron. Omega Supreme sacrifices himself to destroy the SpaceBridge and save everyone else. As the episode nears its end, the Autobots are seen looking towards the horizon and talking to an injured Sari. Sari looks down at her injury only to notice that instead of bleeding, she sees Cybertronian mechanics inside of her. Finally, the episode ends with Megatron drifting in space arguing with Starscreams head.