Darkness Rising, Pt. 5
S1, E5: Optimus takes Autobots into space to guard their dead planet, Cybertron. Meanwhile, Megatron plans to use Dark Energon to wake the dead.

S1, E5: Optimus takes Autobots into space to guard their dead planet, Cybertron. Meanwhile, Megatron plans to use Dark Energon to wake the dead.