The film is set in Jamtaland in 1088, a year after the destruction of the Uppsala temple and at the border between Christianity and Norse Paganism. The pagan farmer and former Viking Grim lives a simple life on with his family. One day they are attacked by newly baptized Vikings lead by Joar. All but Grim is killed and he is instead made a slave. Haunted by the spirits of his dead family and his god, the psychopomp Odin, Grim devises a plan to take horrific vengeance on the followers of White Christ. But Grim must hurry, for his family was not buried properly and every Norseman knows that if that happens, the dead will not stay dead.
Alfred is preparing to join the priesthood, but, angered by the invasion of his country by the Danes, he puts aside his religious vows to lead the West Saxon English against the invaders. Alfred defeats the Danes and becomes an English hero. Although Alfred still desires to join the priesthood, he is pulled between serving God and his lust for blood. After he marries the beautiful Aelhswith (Prunella Ransome), the Danes return and Alfred must muster the English forces once again for a final battle, but he also must battle the dark conflicts within his own soul.
When the demon god Loki (Richard Grieco) wipes off the city of Valhalla to steal the Hammer of Invincibility, only the young hero Thor (Cody Deal) can recover the cities from evil. When Thor's father and older brother are killed in a futile attempt to retrieve the hammer from Loki, a Valkyrie named Jarnsaxa (Patricia Velásquez) attempts to train a naïve and inexperienced warrior Thor to fight Loki. This leads them on a short quest from their training camp, to the Tree of Inventory to collect a sword and shield and then to a small city where Loki attempts to hypnotize the refusing residents into serving as his minions by bringing on a wipeout with a small army of demon beasts. When Thor is about to be defeated, he must forge his own fate to save the city and reclaim the Hammer of invincibility from Loki once and for all.
A tribe of Vikings feel flustered because in every raid they find their target locations devoid of people. Cryptograf, an advisor to Viking chief Timandahaf, says that the enemies always disappear because "Fear gives them wings". Timandahaf excitedly concludes that they must find a "Champion of Fear", who can teach them to be great cowards so they can fly, making them invincible. The chief says he'll give anything to whoever can bring him this Champion of Fear. Cryptograf hatches a secret plan to seize power and tells the chief they'll find the Champion of Fear in Gaul.
The setting is a post-industrial castle that defends the border of an unnamed kingdom. It is terrorized by a demon named Grendel, who kills the castle's defenders, one by one. After fighting his way past several soldiers trying to keep anyone from entering or leaving, the warrior Beowulf offers his help to the castle's king, Hrothgar, who welcomes his help.
In 500 A.D., Hrothgar, king of Denmark, and a group of warriors chase a large and burly man, whom they consider a troll, and his young son, to the edge of deep cliff. The father directs his young son, Grendel, to hide from the attackers' view; whereupon The Danes shoot the father dead, and his dead body plunges onto the beach far below. The Danish king sees the young Grendel, but spares him. Later, Grendel finds his father's body and cuts the head off to take it home. Many years later, the severed (and mummified) head is inside a cave where the boy Grendel has become as large and powerful as his father, and plans revenge.
Le roi Higlack demande au prince Finn et à son champion, le terrible Beowulf, de lui venir en aide parce que son royaume est menacé par le monstre Grendel. Mais Hrothgar cache de terribles secrets.
The film begins with a voice-over by "Barek" who refers to a pagan legend. According to the saga Odin was spurned by Brunhilda. The irate pagan god chained her to an altar in Asgard, surrounded by a ring of eternal fire. He decreed that only a pure-hearted man could overcome the supernatural flames and save the alluring valkyrie. Her saviour's fate should then be connected to hers forever. As Barek explains, he and his only brother learned about this as little boys and craved more and more to rescue the legendary beauty as they grew older.
Brendan, a young, curious, and idealistic boy living in the tightly knit community at the Monastery of Kells, is under the strict care of his stern uncle, Abbot Cellach. Cellach is obsessed with building a wall around the Abbey of Kells, in order to prevent Viking attacks.
The island of Berk is a remote Viking village, from which dragons periodically steal livestock. Hiccup, the awkward son of the village chieftain, Stoick the Vast, is too small to fight the dragons and instead fashions mechanical devices under his apprenticeship with Gobber the blacksmith, though his inventions often backfire. During one attack, Hiccup believes he has shot down a Night Fury, an extremely rare and dangerous dragon. Hiccup later finds it in the forest trapped in his bolas, but finds that he can't bring himself to kill the dragon and instead sets it free. Stoick assembles a fleet to find the dragons' nest, leaving Hiccup in a dragon-fighting class taught by Gobber. Hiccup returns to the forest to find the Night Fury still there, and realizes it is unable to fly properly because of its crippled caudal fin. Hiccup gradually tames the dragon and gives it the name "Toothless", for its retractable teeth. Hiccup makes a harness and prosthetic fin that allows him to guide the dragon in free flight. By studying Toothless' behavior, Hiccup becomes proficient in subduing the captive dragons during training. Stoick's fleet arrives home unsuccessful, but he is cheered by Hiccup's unexpected success.
Five years after the Viking village of Berk made peace with the dragons, they now live among the villagers as helpful companions. Hiccup goes on adventures with his dragon, Toothless, as they discover and map unexplored lands. Now 20 years old, he is being pressed by his father, Stoick the Vast, to succeed him as chieftain, although Hiccup remains unsure if he is ready for this responsibility.
Un an après la mort de Stoïck la Brute et la défaite de Drago. Harold Horrib'Haddock III est devenu chef de Beurk, conseillé par sa mère et ses amis avec qui il lance des raids pour libérer les dragons des chasseurs et les mener à son village où ils vivent libres. Mais alors que la petite île devient surpeuplée, Harold pense à quitter le village pour le Monde caché, une terre légendaire d'où viennent les dragons et que Stoïck a recherchée, pour pouvoir mieux les protéger des multiples attaques de chasseurs. Au même moment, les seigneurs de guerre, qui étaient les généraux de Drago, engagent Grimmel le Grave, un tueur de dragons connu pour haïr les Furies nocturnes et pour les avoir éradiqués depuis son enfance, afin de capturer Krokmou, considéré comme l'Alpha, le roi parmi les dragons, et lui laissent une Furie Éclair femelle pour l'appâter, les Furie étant monogames.
Alors que le roi des Vikings Arald disparaît en mer, son général Aghen déclare que la couronne est sienne. La femme d'Arald, et son fils Moki, s'enfuient dans la forêt. Un jour, alors qu'ils se font attaquer par l'armée d'Aghen, un homme solitaire vient porter secours à Moki et sa mère.