Skylines (2020) is a sci-fi action adventure that continues the story from the 'Skyline' film series, delivering explosive extraterrestrial conflict and high-stakes missions. The film follows Captain Rose Corley (Lindsey Morgan), who must assemble a team of elite mercenaries for a desperate mission to an alien planet. When a virus begins turning formerly friendly alien hybrids against humanity, Rose's journey becomes humanity's last hope for survival.

Director Liam O'Donnell expands the universe established in previous films with ambitious world-building and impressive visual effects that bring the alien landscapes to life. The action sequences are well-choreographed, particularly the zero-gravity combat scenes and planetary warfare. Lindsey Morgan carries the film with a committed physical performance, supported by returning cast members including Alexander Siddig and Daniel Bernhardt.

While the film received mixed reviews for its familiar plot structure, it delivers exactly what sci-fi action fans seek: thrilling space battles, creative alien designs, and relentless pacing. The 113-minute runtime keeps the story moving briskly from Earth's last stand to the alien world's mysterious depths. Viewers should watch Skylines for its impressive visual spectacle and expansion of the franchise mythology. The film serves as a satisfying conclusion to the trilogy while leaving potential for future stories in this universe of human-alien conflict.