With the attack from the Vok last season, and Primal destroyed, and the planet saved, Predacon and Maximal can breathe freely with the Vok having passed, regardless of loss. But out of nowhere, the destruction of the Planet Buster - the second moon of the planet - has unleashed a quantum surge upon the Beast Warriors. Half of the main cast are upgraded into Transmetals - a mix of metal and organic in one body. Meanwhile, with the second moon gone, and the Energon stablized, the cast has a realization - this is Earth - in the past. The war is no longer for Energon and territory - now to settle the future of Cybertron. New combatants arrive, and others fall - some due to kidnapping, others to save the future. Cybertron in the Warrior's original time is made aware of the Beast Wars, and sends a familiar agent to deal with them all. But he fails, and with his plans and troops either ruined or scattered, Megatron makes his ultimate move - one that will either change history... or destroy it. My favorite episodes were Coming of the Fuzors, Part 2, Other Visits, Part 2, Code of Hero, The Agenda Part I-III.