“No one should have to go through what you went through,” Jenna Ortega is told in a new trailer for “The Fallout.” From writer-director Megan Park, the SXSW winner sees the “You” and “Jane the Virgin” alumna playing a teenager struggling to heal in the aftermath of a school shooting.

Vada (Ortega) is in the bathroom with a classmate, Mia (Maddie Ziegler, “Music”), when the pair hear gunshots. They hide in a stall together, and ultimately survive the attack. They are, of course, haunted by what happened, and bonded by their experience.

“Did you have, like, the craziest nightmares last night?” Vada asks. “You have to be able to sleep to have nightmares,” Mia answers.

“I sat down to write the film after almost a year of wanting to talk about the subject of school shootings. I was upset and enraged and really scared. I knew I didn’t want to make a movie that would ever incite more violence or be triggering to anyone who had been through this experience — I felt a huge responsibility to do it justice but to also make it really honest,” Park told us. “I also felt that if I was a teenager right now, I’d be terrified to go to school every day. I wanted to tell that side of the story.”

Also an actress, Park is best known for her on-screen work in “The Secret Life of the American Teenager.”

Ortega can currently be seen on the big screen in “Scream.”

“The Fallout” won SXSW’s grand jury award in the narrative feature competition. It launches on HBO Max January 27.