The road-trip movie isn’t kidding around with the warning it kicks off with.

Warning: This story contains spoilers forDon’t Make Me Go.

It’s revealed that she had hypertrophic cardiomyopathy, a genetic heart condition that’s often hard to detect.

MIA ISAAC stars in DON’T MAKE ME GO Photo: GEOFFREY SHORT © AMAZON CONTENT SERVICES LLC

Prime Video / Amazon

As it happens, Max is hiding a rough health prognosis of his own: bone cancer.

He’s been given a year to live.

The shocker twist ending was always the plan screenwriter Vera Herbert had for the movie.

Then the rug is pulled out from under them.

“That’s a bit how life works in these moments,” Herbert says.

Cho’s confident karaoke turn was another piece of the puzzle.

The screenwriter has had to stick to her convictions for nearly a decade.

But it wasn’t until 2021 that Amazon Studios signed on to develop it.

(Actor Cho describes reading Herbert’s ending as a “Keyser Soze moment.")

“He knows he needs to keep going, because that’s what she wanted him to do.”

Don’t Make Me Gois now streaming on Amazon Prime Video.