LEWISTON – The script has been in the works for two years.

There’s an ancient Egyptian vampire overlord with a Russian werewolf bodyguard; a young Iraqi woman turned into a vampire and bent on revenge because the overlord took out her family; and hidden treasure stashed by Templar Knights.

The setting: Lewiston.

Seth Roberts wants the whole movie, his first feature-length project, filmed in Lewiston-Auburn using L-A-area talent, backdrops and volunteers.

The filmmaker, writer and Andover College student says he’ll make it happen.

“No. 1, I love Lewiston. No. 2, I think we can do it,” he said. “I firmly believe by the end of summer we’ll have the filming wrapped up, and I firmly believe it’s a project we’re going to be proud of.”

First, he’s on the hunt for a cast. All but one part are open.

Roberts met his leading lady, the reluctant but vicious Amira, at Andover College, studying to be a medical assistant.

“I saw her (Bryanna McLaughlin) and said, ‘She’s the girl.’ She has the Middle Eastern look, she has the green eyes, the dark hair and the figure Amira would have,” Roberts said.

He and his brother, Joshua Roberts, who also worked on the script, have outfitted McLaughlin in all black with tall boots, shiny, skinny pants and twin 5-pound movie prop guns.

“I get more excited every day. It’s something I’ve always wanted to do,” McLaughlin, from Lisbon Falls, said. “It’s going to be awesome. I tell people, ‘I’m in a movie!’ My friend next door has already asked, ‘Can I have your autograph?'”

‘Darkest purpose of all…’

Roberts hopes the horror/action movie, “Dark Vengeance: Banishment,” will kick-start his MADDOG Productions film company. The 35-year-old ultimately hopes to make several movies a year using local scripts and talent, in any genre.

His aim for this first film is a short run in local movie theaters then direct to DVD. He’s already got ideas for two sequels.

Roberts said he and Joshua, 31, worked to make this a vampire story with a twist. Instead of a bite instantly turning a victim into another vampire, only those people who have a “dark purpose” in their soul live and transform.

After Amira sees her family slain, “One of her lines is: I survived for the darkest purpose of all, vengeance,” Roberts said.

Villain Amun Opsef and Amira both come to Lewiston seeking scrolls and a gateway to another dimension hidden here by the Templar Knights.

“I’m a little worried we won’t get it right the first time,” said Joshua Roberts, who lives in Sabattus and recently returned from a one-year tour in Afghanistan with the National Guard.

“Right now, I’m being the devil’s advocate on everything: Are we doing this right? Are we biding enough time?” he said.

He’d like to enroll in film school next year.

Roberts’ own film background is limited to three documentaries made for Andover’s criminal justice program. He’ll graduate next month with a degree in criminal justice.

He’s looking for people to help on this film with prop design, makeup, film editing and special effects. Roberts is hoping a high school band will want to write and record music for the soundtrack. He’s also looking for a martial artist to help choreograph fight scenes.

Next Wednesday he’ll hold the first open casting call for the movie, at the Multi-Purpose Center from 5 to 9 p.m. Actors won’t be paid; instead, he’ll offer “points,” a percentage of net profit.

“Dark Vengeance” doesn’t have a budget yet.

“Today, it’s a shoestring. Tomorrow, who knows,” said Roberts, who’ll direct.