There's a lot of substance to Norse mythology, with its rich layers of gods, their worlds and their feats. There are also a lot of characters and storylines surrounding the Marvel Thor comic books. As if this undertaking wasn't enough, the Thor movie chooses to include two thorough plot lines in vastly different locales, a love story, a redemption arc and a monarchist coup subplot, an army of giant arctic beasts, and a nearly unstoppable alien juggernaut. And that doesn't even count the extensive focus on bridging the connections between the random superheroes that will eventually form the Avengers.
Surprisingly it isn't until about the halfway point that the pacing begins to feel rushed, but from there the two-hour time frame barely contains the ambition of this origin film. Capable actors and special effects-laden action sequences keep the cheesiness mostly at bay, but poorly designed villains and bouts of hokey dialogue work to hinder their noble efforts. If you don't find phrases like "frost giants" and "rainbow bridges" distasteful, you'll likely forgive many of the film's sillier moments and indulge in the excitement of the otherworldly adventure.
Moments before King Odin's (Anthony Hopkins) son Thor (Chris Hemsworth) can be named successor to the throne, the realm of Asgard is infiltrated by their age-old nemeses, the Frost Giants. Infuriated by their presence and intent on exposing those responsible for the breach, Thor disobeys Odin's orders and travels to the icy realm of Jotunheim with his brother Loki (Tom Hiddleston) and his band of fearless warriors, including Volstagg (Ray Stevenson), Hogun (Tadanobu Asano), Fandral (Joshua Dallas), and Sif (Jaimie Alexander). Their imprudent actions cause the Frost Giants to declare war against Asgard and Odin banishes Thor to Earth where he is stripped of his god-like powers. Once there, the warrior encounters the fiercely determined astrophysicist Jane Foster (Natalie Portman) as well as a new battle to fight - first against government agency S.H.I.E.L.D. and then with a soulless destroyer whose sole mission is to ensure he never returns home.
The creators of Thor are misguidedly under the impression that everyone watching this new superhero movie is a fan not only of the comics, but also the other Marvel entities, as well as the previous Marvel movies. This is one piece of the puzzle that leads to The Avengers theatrical adaptation (stay through the end credits for marvel cinematic universe trivia another tidbit), and plenty of the running time is spent building references and alluding to characters from that universe. As a result, the Thor story is monumentally compacted. A lifeless romance is mustered with little enthusiasm or believability, a villain is created to fulfill a generic role of betrayal and jealousy, a history of feuding with gargantuans, epic battles and heroic warriors is erected, along with hasty explanations of portals, bridges, travelling between realms, and multiple, fantastic worlds. Even customs, rituals, ceremonies and costumes are briefly fleshed out, many of which must be taken for granted. Magic, wormholes, super powers, flight, a mighty hammer, a gatekeeper and more are presented but never detailed, forcing the viewer to simply accept the foreign kingdoms and inhabitants of Asgard and Jotunheim.