All is Revealed

Donatello's Role
Overall Involvement - Minor

After being transported back home, Donatello tells Leo of they're on Earth now, and surrounded by the men from TCRI. He then points out that the Triceratons came back with them. The confused Triceratons start a fight with TCRI and the turtles.

The turtles join with TCRI to take out the Triceratons, and, when it's  over, the TCRI aliens reveal Splinter and the brothers are both surprised and overjoyed. They all hug him and Splinter explains the situation. The TCRI are aliens called the Utrom that were curious about Splinter so they captured him, but he was later released once the Utroms noticed the distress it caused the turtles. At the reveal of TCRI's highly advanced technology, Don expresses feeling useless in his technological expertise not even being able to compare.

TCRI is infiltrated by the army due to the turtles' teleportation involving a giant beam of light being sent into the sky which alerted authorities. The Utroms are forced to leave, and they ask that Splinter and the turtles come with them. Don yells at them to stop. Eventually, they decide to follow. Don tells Raph that they have no choice because the army's coming. They are teleported into April's bathroom.

Quotes

 * "Leo--we're back on Earth! There are those TCRI guys, and--"
 * "Oh, crap--look what came back with us!"
 * "We're sorry for our part in all that ...but listen--won't the folks on your home planet do something to help you? If you're out of contact for a few days, won't they get worried and send help?"
 * "Darn! I feel useless--I know a lot about electronics, but TCRI stuff is way out of my league!"
 * "Stop!"
 * "We've got no choice--the army's blasting through the door right now!"