Scootaloo is a filly with a secret. If her secret was revealed she could be exiled or worse.

When ponies find out that Scootaloo has been stealing from them, she gets shunned and outcasted. Depressed, angry and all alone she becomes the perfect victim for a certain nightmare.

when Rainbow Dash gets sent to Tartarus for a crime she says she didn't commit

when rainbow tries to achieve her life long dream it causes her life to fall apart