More than a million fans can’t be wrong.

Last year the Trans-Siberian Orchestra sold more than a million tickets and grossed more than $51 million during their winter tour. Ever since the progressive rock opera started touring in 1999, fans have repeatedly flocked to watch the show famous for its impressive stage production.

Show designers have never met a pyrotechnic, laser, light or special effect they didn’t like.

TSO’s “The Ghosts of Christmas Eve” returns to the World Arena for two shows on Sunday.

“The story itself is a great story,” says Al Pitrelli, TSO’s music director and lead guitarist.

Paul O’Neill, TSO founder, producer, composer and lyricist, wrote “The Ghosts of Christmas Eve” as a made-for-TV movie that debuted in 1999. This year’s show will feature the movie playing live as the musicians perform.

“All the effects embellish it,” Pitrelli says. “It’s got a whole third dimension watching it live.”

The story follows a young runaway who finds shelter in an abandoned vaudeville theater and experiences ghostly visions from the concert hall’s past. Music from past TSO Christmas-themed rock operas will also be featured, including “The Christmas Attic” and “The Lost Christmas Eve,” along with songs from the band’s recently released album “Letters from the Labyrinth.”

“There’s a reason we’ve been doing it for 20 years,” Pitrelli says. “At the end of it, it’s an honest show. It’s heartwarming, sad, happy – emotionally, it is what Christmas really is. For a lot of people Christmas isn’t just Skittles and rainbows. There’s a clear cut message to the story – the good guy always wins at the end. People walk out feeling better.”

Details: 3 and 7:30 p.m. Sunday, Broadmoor World Arena, 3185 Venetucci Blvd., $51.50-$71.50; 520-7469, ticketswest.com.