X-Men: Days of Future Past soared to a solid $8.1 million from Thursday previews from 2900 screens and could hit more than $100 million over the four-day holiday.

If you’ve seen the latest movie in 20th Century Fox’s X-Men franchise you probably didn’t know what the heck a bonus scene was all about. If you haven’t seen it, don’t read further as there may be spoilers below.

Director Brian Singer went ahead and announced the sequel, X-Men: Apocalypse back in March. The film is dated for a May 27, 2016 release with director attached to helm once again.

Simon Kinberg and X2 scribes Dan Harris and Michael Dougherty penning the script alongside Singer. The film will have “more mass destruction” than any X-Men film to date.

Apocalypse aka En Sabah Nur is a supervillain from the comics who also turns out to be the first mutant in history and when the credits finish rolling, the bonus clip begins with a pan across a desert and we see a large number of religious persons from ancient times bowing and chanting praise and they’re saying the name of a man, their leader, “En Sabah Nur.”

A young Apocalypse is seen constructing the pyramids through telekinesis. In the distance are his four horsemen-mutants: Death, Famine, Pestilence and War.

In a made-up ancient language, “En Sabah Nur” means “The First One,” and With the Sentinels out of the way, “the world is primed for Apocalypse to push his own twisted philosophy — and if he can build the pyramids with his mind, there’s nothing that can stop him.”

X-Men: Days of Future Past is currently in theaters, while X-Men: Apocalypse opens on Memorial Day weekend in 2016, so it’s a long time to elaborate on that.