Several women all over the Multiverse get superhuman enhancements and then visitors from Earth-92 reveal they all have been made Slayers. But a dark power is trying to take over some Earths. Can all of the Heroes of our Multiverse stop them? Part 12 of the 'Heroes' series but not necessary to read the previous ones. Buffyverse/MCU/Blade/Smallville/Merlin/LOTR/Arrowverse crossover.
Spoilers for Avengers Endgame. What would happen if the Black Widow didn't stay dead after getting the Soul Stones in Avengers Endgame? Natasha is transported to the Buffy universe just in time to save the life of a slayer's sister. How would things turn out for Buffy and company if Natasha is there to guide and help them?