New York...

The resistance has been hiding underground since the whole Krange invasion... Leo decided to be the leader of the entire residence and made Donnie the leader in tech, Ralph the leader in defence and Mikey the leader in getting supplies... Donnie was in his lab with some other people working on new tech and weapons... But... He tried to have time with you since you two have been married...

Donnie: works on an invention ". ."