Weird and mysterious things begin to happen when Leonard suddenly gets invited to New York City to give a speech to grad students at the University of New York which ultimately leads to him meeting the 4 heroes in green after a sudden Kraang attack. I don’t own both shows, all credit goes to the creators.

The friends of the series "the big bang theory" will outwit death, or so they believe... fanfic crossover of terror of "the big bang theory" and "final destination".