Transformers: EarthSpark
Season 1, Episode 21: What Dwells Within
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The Malto kids are lost in an underground maze of tunnels with a mysterious monster stalking them. To survive, they must team up with Starscream! But can they trust him?
All Episodes - Season 1
Episode 1
Secret Legacy (1) / Secret Legacy (2)
Episode 3
Moo-ving In
Episode 4
House Rules
Episode 5
Classified
Episode 6
Traditions
Episode 7
Family and Friends
Episode 8
Decoy
Episode 9
Age of Evolution (1) / Age of Evolution (2)
Episode 11
Hashtag: Oops
Episode 12
Outtakes
Episode 13
Missed Connection
Episode 14
Security Protocols
Episode 15
Bear Necessities
Episode 16
Warzone
Episode 17
Home (1) / Home (2)
Episode 19
A Stygi Situation
Episode 20
Disarmed
Episode 21
What Dwells Within
Episode 22
Prime Time
Episode 23
Stowed Away, Stowaways
Episode 24
The Battle of Witwicky
Episode 25
Last Hope