Powerhouse touring show “Lord of the Dance” will step-dance its way onto the bigscreen next year, with creator and original star Michael Flatley appearing in a 3D movie version set for release on March 17 — St. Patrick’s Day.Helmed by Marcus Viner, “Lord of the Dance in 3D” incorporates new sets, lights, costumes and effects into the show, which preemed in Dublin in 1996. Stage version has grossed more than $1 billion in its various stints around the world. Nineteen Fifteen Prods., a 3D production company based in the U.K., produces the pic in association with ITN Prods. Movie will be distributed in 3D by alternative content company SuperVision Media, with Kaleidoscope handling other formats. Flatley was one of the original performers in Irish dance showcase “Riverdance” until he split with that show and went on to create, produce, direct and star in “Lord of the Dance.” Storyline of “Dance,” based on Irish folklore, centers on the title character’s fight to protect his people from an evil lord. The live version of “Lord of the Dance” currently maintains two troupes, one on the road in Europe and another in the U.S. The production in its various incarnations has been seen by some 60 million people, which suggests the potential for wide appeal for the bigscreen version. Movie was filmed in London and Dublin last month. Viner, who has helmed DVDs for acts including David Bowie and Kylie Minogue, specializes in multicamera shoots of live music events.