The Tripods (1984)

Set in 2089, towering alien machines called Tripods dominate the Earth, having enslaved humanity through mind-control implants given during adolescence. Will Parker, eager to break free from this oppressive fate, embarks on a daring journey alongside his cousin, Henry. Together, they seek to join the underground resistance fighting against their alien overlords. As they navigate a world stripped of freedom, the duo faces numerous challenges and encounters that test their resolve to reclaim humanity's future.