Things took a dramatic turn in the fourth episode of The Falcon and the Winter Soldier and that tension is about to explode in the new teaser. Marvel Studios released a midseason trailer before the penultimate episode previewing the titular heroes confronting John Walker after his point of no return actions with Captain America’s shield.

At just under a minute and a half, the trailer recaps what has happened in the first four episodes – Bucky questioning why Sam gave up the shield, Sam’s high flying action, the revelation of Isaiah Bradley, and Walker becoming the new Captain America. Then it features some footage for the last two episodes, including Sam and Bucky flanking Walker who states, “You don’t want to do this,” and Bucky responding, “Yeah, we do.”

In the fourth episode of The Falcon and the Winter Soldier, Walker took the last vial of Super Solder Serum after already displaying some unhinged behavior. It ended with the shocking scene of Walker killing one of the Flag Smashers by bludgeoning him with the shield…out in public…in front of a crowd. A fight between Falcon and Winter Soldier with the now-more powerful Walker is inevitable.

The last two episodes air on April 16 and April 23. The show stars Anthony Mackie, Sebastian Stan, Emily VanCamp, Wyatt Russell, Erin Kellyman, and Daniel Brühl.