The Oscar winners anchor the Amazon Prime Video drama, which drowns a heartfelt allegory in sci-fi silliness.

Irene and Franklin are growing old together in fictional Farnsworth, Ill.

If only I could stop there.

Night Sky

J. K. Simmons and Sissy Spacek in ‘Night Sky’.Amazon Prime

All Jude will tell Irene and Franklin is that he’s on a mission to find someone.

WhenNight Skyleaves Irene and Franklin alone, it can be wonderfully moving.

But Michael grew up there, and Irene has one last task on her to-do list.

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Chai Hansen in ‘Night Sky’.Amazon Prime

“This is our riddle to solve,” she says of the portal.

“Don’t take that away from me.”

Spacek and Simmons are a sublime on-screen couple, with his get-off-my-lawn gruffness balancing beautifully against her determined equanimity.

Episode eight, the season finale, has approximately four endings, one for each unresolved story arc.

“I found mine, here in this house with you.