You will Watch Transformers Prime Season 1 Episode 23 online for free episodes with HQ / high quality. Stream cartoons Transformers Prime Episode 23 One Shall Fall. Optimus became concerned that a prophecy detailed in the Covenant of Primus was imminent and that Megatron could regard it as his destiny. When Agent Fowler reported that the Decepticons were stealing components for a new space bridge, Optimus took a team to a military lab to stop them. Though they stopped the Vehicons from stealing the power source, Megatron himself arrived and before they could react, Bumblebee also arrived with a gravely injured Raf. While ‘Bee and Arcee returned Raf to base, Optimus and Bulkhead snuck aboard the Nemesis to retrieve the power source. They located it, and Prime sent Bulkhead back to base with it, while he went in search of Megatron. He found his prey near a volcano and the ancient enemies fought. Optimus managed to beat Megatron, but as he prepared to deliver a killing blow, the volcano erupted with Dark Energon. Megatron experienced an increase in power, and turned the tide. The prophesized alignment of worlds had occurred, and Megatron had Optimus at his mercy.