ThorSave

We open in the New Mexico desert. Dr. Jane Foster, her mentor Erik Selvig, and her intern Darcy Lewis are tracking a cosmic anomaly. A massive rainbow-colored disturbance opens above them; a tall, golden-haired man crashes from the sky and lands directly in front of their truck. Jane runs him over. He is Thor — though they don't yet know it. He has been banished from Asgard for reasons that take ninety minutes to explain.

Cut to: backstory. Thor is the heir to the throne of Asgard, the realm of the Aesir gods. His father Odin (Anthony Hopkins) presides over the Nine Realms. His brother Loki (Tom Hiddleston) is the second son. On the day of Thor's coronation as king, three Frost Giants infiltrate Asgard via a forbidden secret passage. Thor — arrogant, brash, impulsive — leads his Warriors Three and Sif into Jotunheim, the Frost Giants' realm, against Odin's explicit orders. He nearly starts a war.

Odin, furious, strips Thor of his hammer Mjolnir and his godhood. He banishes Thor to Earth with the curse that the hammer can only be lifted by 'one who is worthy.' Thor lands powerless in New Mexico — just in time for Jane's truck to find him. SHIELD takes the hammer and cordons off the crash site. Loki visits Thor in custody to tell him their father has fallen into Odin-sleep (an Asgardian regenerative coma) and that he, Loki, has been forced to rule Asgard in his absence.

Loki is lying. Loki has discovered he was actually a Frost Giant orphan adopted by Odin during the Asgard-Jotunheim war centuries earlier. Loki, never as beloved as his thunderous older brother, decides to use the throne to engineer his own legitimacy. He sends the Destroyer — a massive automated Asgardian weapon — to Earth to kill Thor and prevent his return.

Thor's New Mexico exile is the heart of the film. He meets Jane Foster, falls in love with her in a montage that establishes the franchise's first major romantic arc, eats Pop-Tarts, learns humility, befriends Erik Selvig at a small-town diner. The Destroyer arrives. The Warriors Three and Sif arrive to help Thor reclaim his power. Thor, in a moment of selfless sacrifice — offering his own life to protect Jane and the townspeople — proves himself worthy. Mjolnir flies back into his hand. His armor reconstitutes. He destroys the Destroyer.

Thor returns to Asgard. He confronts Loki at the Bifrost — the rainbow bridge connecting the Nine Realms — where Loki is attempting to use it to destroy Jotunheim entirely. The brothers fight. Thor, forced to choose between his brother's life and his planet's safety, destroys the Bifrost. Loki dangles from the broken edge over the cosmic void. Odin awakens just in time to grab Thor and pull him to safety. Loki, refusing to be saved by them, lets go and falls into the void. He is presumed dead.

The film closes with Thor on Asgard, separated from Jane by the destruction of the Bifrost, looking down at Earth from the broken edge. He has been a better son for the experience. Odin is proud. Jane and Erik continue researching cosmic energy in New Mexico, working through their data. In the mid-credits scene, Nick Fury shows Erik a glowing blue cube — the Tesseract — and asks for his help understanding it. Loki, alive and lurking in the shadows of the room, whispers into Erik's mind.

Thor (2011) grossed $449 million globally on a $150 million budget — modest by modern MCU standards but a critical commercial success at the time. Branagh's Shakespearean approach to cosmic Marvel material established the tonal register the franchise would build on. Chris Hemsworth went on to play Thor in eight subsequent MCU films across fifteen years. Tom Hiddleston's Loki became the franchise's longest-running villain arc, anchoring a Disney+ series and multiple Avengers films.