When Serena and her family swapped into the 2105 future. They begin to split up and trying know how to escape the city, any places to go.

Leonardo: (breath) sensei... I just... can't... move.

Master Splinter: hang in there, Leonardo. We cannot leave this place until we'll find our family.

Serena: what's gonna happen to my uncle leo, grandpa?

Master Splinter: it doesn't matter... whatever we are, but I'm thinking we are in the future... We must ninja vanishing.

Serena: but we just can't leave you, uncle leo. I don't wanna to see you die, please.

Leonardo: don't worry, Serena. I won't... We still need to find your uncles.