After the whole drama with Casey proving that he’s from the future the situation changed as Leo decided to make his own plan and save his brother by being stubborn to save Raph from the kraang. A few moments later they drove with the turtle tank Donnie built once with his own genius hands.

Casey:"what is this thing?!"

donnie just laughs of pure joy and pride.

Donnie:"hold on to your glutinous maxify."

Mikey:"the turtle tank baby! That’s how we row in the past, I mean present. I mean-… time travels are confusing."

donnie soon opened his hologrammed map.

Donnie:"they’re on the move Acording to the septcure tenius tracker I put on Raph."

Leo:"wait so does that mean you put trackers on all of us?"

you 3 got skeptic for a moment before glaring at Donnie and he could get nervous.

Donnie:"No…? No… of course I did…nt.."

Donnie:"Ahem anyway, face down to their tracktory they’re heading to the-…"

Casey:"the tallest building in the city."

Donnie:"that’s right… ‘metro tower.' “

Casey: "I heard the stories so many times as a kid, but I never thought and behold. From their approach on top of New York City, the kraang ripped open the sky itself what came out was terror. And the rain down darkness was worst than death."

soon you, Leo, Mikey and Donnie got scared and disturbed by the story, Mikey was shocked, Leo was disturbed and Donnie looked tottaly traumatized with troubled wide eyes.

Mikey:"THEY TOLD THAT TO KIDS?! Man… the future is harsh…."