"Avengers: Endgame" tickets are on sale now, and Marvel has marked the occasion with a new look at the eagerly-awaited movie.The special preview is packed with new footage, including Captain America and Iron Man reuniting before closing with a tease of the duo facing off against Thanos on what could be Titan.They're joined by someone in a red cape, who is likely Thor but could be an alive-again Doctor Strange. The trailer gets off to a sombre start as the Avengers plan their revenge. "If we do this, we'd be going in short-handed," Bruce Banner warns, with Rhodes replying: "Yeah, you mean, because he killed all our friends?"Arguably the best bit for fans comes halfway through, as Tony Stark asks Cap if he trusts him and Cap replies: "I do."While previous trailers have shown black-and-white footage of the fallen Avengers, fans get a new look at Peter Parker in the special look as Tony stares down at a photo of the pair of them.It's Thanos who gets the final word, though: "You could not live with your own failure. Where did that bring you? Back to me." "Avengers: Endgame" will be in theaters April 26.