Last night was a very big night for Chris Hemsworth. The star of Marvel’s THOR and AVENGERS franchises joined Twitter before hosting SATURDAY NIGHT LIVE on NBC. The combined frenzy of social media and live television got the better of Hemsworth, however, as he spoiled the ending of AVENGERS: AGE OF ULTRON. Don’t let Ultron’s trailer tough talk fool you; The Avengers have this battle won!

To see how Earth’s Mightiest Heroes pulled off their incredible victory, be sure to catch Marvel’s AVENGERS: AGE OF ULTRON, in theaters May 1.