Christopher Plummer wasn’t expecting to go to Europe next week, but he will — when he reshoots Kevin Spacey’s scenes in “All the Money in the World.”

The Ridley Scott film, due to open Dec. 22, had already completed filming when Scott decided to reshoot after the latest barrage of sexual harassment charges against the “House of Cards” star.

Plummer says he got the news a few days ago. Oddly enough, the “Sound of Music” star tells The Post, he’d been up for the role of billionaire J. Paul Getty himself.

“At one point, Ridley Scott had considered me to play the part — I was one of the many,” Plummer said from his Connecticut home Thursday morning. “The irony now is I’ll end up playing it. It’s awfully sad, a sad situation, but I’m looking forward to working with Ridley again . . . I’m sorry, because Kevin is a very talented guy, and I admire him enormously as an actor.”

Plummer, who turns 88 next month, plays Scrooge in “The Man Who Invented Christmas,” out Nov. 22. And now he’ll be heading out to London and Rome to reshoot Spacey’s scenes in “All the Money in the World.”

“It’s a huge undertaking, and in a very short time,” said the man who’s won two Tonys, a couple of Emmys and an Oscar. “It’s a very interesting story and very well written, so I’m glad to be in it. I just hope I can remember everything!”