This is a transcript of a dialogue from a video or TV show. It involves various characters, including the Teenage Mutant Ninja Turtles, Shredder, Karai, and others, engaged in action and conversations. The dialogue covers a range of events, including battles, rescues, and confrontations.
Here are the key facts extracted from the provided text:
1. Donnie mentions "plan B" and hacking into the crank system.
2. April has been taken by someone, possibly the Crang.
3. Shredder plans to put an end to the turtles.
4. Leonardo appears to be in a dangerous situation.
5. A mention of a "Retro mutagen" that has no effect.
6. The turtles plan to save Karai.
7. There's a mention of a helmet and Karai in a dungeon.
8. A plan is discussed to deal with a threat.
9. The Turtles are leading someone toward a power generator.
Please note that the provided text is not a complete story, so some context might be missing.