Megatron causes his fellow Decepticons to be infected with the deadly Cosmic Rust. Perceptor is captured to find a cure and he does, learning that element X will do the job. The Decepticons are cured, but then they use Perceptor to spread the Cosmic Rust to the Autobots and element X is in short supply.
the-transformers-ep-45The Transformers Season 2 Episode 45
The Transformers Season 2 Episode 45
Cosmic Rust
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