The Magnificent Seven in space. Released in 1980 starring: starring Richard Thomas, Robert Vaughn, George Peppard, John Saxon, & Sybil Danning. Battle Beyond the Stars is an American space opera produced by Roger Corman and directed by Jimmy T. Murakami. Music by James Horner.
On the peaceful planet Akir a young farmer seeks out a band of mercenaries to defend his planet from the evil Sador and his armada the Malmori. Zed a former warrior now old and nearly blind tasks Shad a young pilot to seek out and find weapons and allies to defeat the tyrannical warlord.
First Shad visits a space station made up of mostly androids with only two humans. One of them a former friend of Zed’s, a doctor who has become more cyborg than man and his Daughter who cares for him and the androids. The Doctor wants his daughter Nanelia to mate with Zed and stay even if by force if necessary, to stay aboard the station. Shad not wanting to abandon his people convinces the daughter to escape with him and split up to search for the heroes they need to protect the planet.
First up Shad encounters Cowboy a freighter-pilot / truck driver from Earth who decides to join the battle only after Shad rescues him from a horde of Jackers. Next up Shad comes across 5 alien clones called Nestor who share one conscious.
Life for them is so boring they join up just to be entertained. A wealthy assassin named Gelt who can’t lead a peaceful life anywhere anymore joins up in exchange when he is done to live out the rest of his life in peace on the planet Akir. With his soldiers in tow Shad head back to Akir and meets a Valkyrie warrior named Saint-exmin. Wanting to prove her worth in battle she tags along.
While separated Nanelia is captured by the Cayman a reptilian slave dealer. Cayman’s home world was destroyed by Sador, so Nanelia has very little trouble of convincing him and his motley crew of aliens to join the fight. The peaceful people are wary and cautious of the mercenaries due to the fact they are a violent species when they arrive on Akir.
Battle ensues when Sador returns with his evil Malmori troops to attack the planet. Although the mercenaries are able to thwart Sador’s forces at first it comes with a high price tag as many of the peaceful people of Akir are killed. Sador regroups the last of his fleet and attacks again killing most of the mercenaries in the wake. Only Shad and Nanelia, survive the onslaught by using their ship to self-destruct as they escape and completing the mission of killing Sador and rescuing the planet Akir from his tyranny.
Side note: for those of you that loved the movie in 2010 a comic book prequel was released called “Battle Amongst the Stars”