The film begins in a Kingdom of Trolls, where Stanley (Dom DeLuise) has a magical green thumb with the ability to bring flowers and plants to life at a touch. When he is discovered doing so, the other trolls take him as prisoner to Gnorga (Cloris Leachman), the Queen of the Trolls, who concludes that Stanley "gives a bad name to trolls everywhere" and demands that he be turned to stone. At the behest of her consort King Llort (Charles Nelson Reilly), Gnorga instead banishes Stanley to Central Park where, after a series of mishaps, Stanley hides himself under a bridge. In New York City, two young siblings named Gus and Rosie (Phillip Glasser and Tawny Sunshine Glover) learn that their father Alan (Jonathan Pryce) and mother Hilary (Hayley Mills) cannot take them to Central Park. while left alone with their nanny, Maria, Gus takes Rosie to the Park himself. While playing with Gus's toy boat, which is later accidentally smashed, Rosie befriends Stanley. When Queen Gnorga discovers Stanley happy in exile, she creates a flood to drown them by making Gus cry, but Stanley enlarges Gus's toy boat to escape. Soon after, Stanley shows the children his own ideals, depicted as a world of his own.
Deep in a coal mine in Pennsylvania, a strange stone is found with Norse runes. The stone is transported to NYC, where some archeologists investigate the mystery. Death and destruction follow, as one of the archeologists becomes possessed, and begins killing everyone around him. Sam Stewart and wife Marla (Joan Severance) find it has some connection to their friend Martin. A young boy named Jacob (Chris Young) is haunted by terrifying nightmares of what is to come, and his grandfather (William Hickey) explains these dreams through stories from Norse legend, which says that the only one who can destroy Fenrir is Týr, the Norse god of single combat, victory and heroic glory, who is prophesied to return to fight the creature. In the nick of time, the mystical Clockmaker (Alexander Godunov), who actually is Týr, one-handed Norse God of combat, begins fighting Fenrir. The film cast includes Peter Riegert as a Pez popping, cussing policeman, and features a cameo by composer David Newman as a police officer named Strange.
The film is based largely upon Norse mythology. In the film's opening scene Erik (Tim Robbins), a young Viking, discovers that he has no taste for rape and pillage, and suffers guilt over the death of Helga (Samantha Bond), an innocent woman.
Two years after the episode "A Minor Problem", Dr. David Banner has been gainfully employed at the Joshua-Lambert Research Institute (as David Bannion) where he and a team of scientists are putting the final touches on a Gamma Transponder, which he intends to use to cure him of his ability to turn into the Hulk. He has not changed into the Hulk for two years since he met a young widow, Maggie Shaw, with whom he is romantically involved. By chance, he is recognized by a former student of his, Donald Blake. Blake claims that, on an expedition in the Norwegian mountains, he found an enchanted hammer containing the soul of Thor, an immortal Norse warrior banished by Odin to Earth to earn worthiness into Valhalla. Thor is reluctantly compelled to serve Blake, who is unnerved by this. Banner does not believe him, so Blake summons Thor into Banner's laboratory. Thor damages equipment and angers Banner until he turns into the Hulk, who easily fights him off and leaves.
The film begins with the Potter family moving into a new apartment complex in San Francisco. While unpacking, their young daughter Wendy is attacked by a grotesque little creature, who had long ago been transformed from a powerful wizard into a troll. Using a magic crystal green ring, it captures Wendy and possesses her form. After meeting the other eccentric tenants, the family notices Wendy's unusual behavior (roaring, biting, tossing people across rooms, punching people in the groin), but they attribute her behavior to the stress of the move. The only one that notices something is terribly wrong is Wendy's brother, Harry Potter Jr.
Initially narrated by the titular character through a flashback, Grendel (Peter Ustinov), the "Great Boogey", recounts how he first left his cave as a child and encountered the Danish King Hrothgar (Ed Rosser) and his thanes. After being rescued by his mother, Grendel pondered over the similarities he shared with the Danes, yet lamented on their not being able to understand his language. He watched as Hrothgar's power and wealth grew, disgusted at his excesses and the royal Shaper's (Keith Michell) revision of history, presenting the king's underhanded and brutal achievements as glorious victories. Desperate to find meaning in life, Grendel encountered the dragon (Arthur Dignam), who informed Grendel that his sole purpose in life is to terrify humanity, thus stimulating human imagination and encouraging social cohesion.
Siegfried arrive à la cour de Günter, roi des Burgondes, précédé d’une flatteuse réputation de séducteur. Il tombe amoureux de Kriemhild, la sœur du roi, mais ne pourra obtenir sa main tant que son futur beau-père n’aura pas convolé. Grâce à ses qualités athlétiques naturelles et à son don d’invisibilité, il permet à Günter en le remplaçant au moment critique, de triompher des épreuves amoureuses imposées par la belle Brunehilde à son futur époux. Un double mariage récompensera les vaillants jouteurs...
Siegfried von Xanten defeats the dragon Fafnir, and becomes invulnerable by bathing in the beast's blood. He then wins a net of invisibility (Tarnkappe) and the legendary Treasure of the Nibelungs (Nibelungenschatz) from the dwarf Alberich. Siegfried falls in love with Kriemhild, sister of King Gunther of Burgund. However, Gunther will not allow Siegfried to marry her until he has helped Gunther to win a wife himself. They travel to Iceland where Siegfried helps Gunther to defeat and win Queen Brunhild. They return to the Burgundian court at Worms and both weddings take place. However, jealousy and envy cause frictions at the court. Intrigues eventually result in Hagen of Tronje killing Siegfried during a hunt. In part 2, Kriemhild marries Etzel, king of the huns, in order to gain revenge for the murder of her husband. The Burgundians, led by Gunther and Hagen, follow an invitation after Kriemhild gives birth to Ortileb, and travel to Etzel's hall, where they are attacked by the huns. Hagen kills Ortileb in the fight. There is a great slaughter and Gunther is killed. Finally Kriemhild kills Hagen and is then killed herself.
Thor and the Amazon Women (original title: Le Gladiatrici) is a sword and sandal picture that features a civilization of women warriors ruled by the evil Black Queen who has subjugated the men in her land. Thor and his friend Ubaratutu live in a distant village with a young blonde woman named Tamar and her young brother Homolke. Tamar’s father was the king of a seaside village who had been killed several years earlier when the Black Queen’s Amazon warriors raided the village.
The Virgin Spring tells the story, set in the late medieval Sweden, of a prosperous Christian whose daughter, Karin (Birgitta Pettersson), is appointed to take candles to the church. Karin is accompanied by her pregnant servant Ingeri (Gunnel Lindblom), who secretly worships the Norse deity Odin. Along their way through the forest on horseback, Ingeri becomes frightened when they come to a stream-side mill and the two part and Karin sets out on her own.
The title character Siegfried, son of King Siegmund of Xanten, masters the art of forging a sword at the shop of Mime. Mime sends Siegfried home, but while preparing to leave, Siegfried hears the tales of the kingdom of Burgundy, the kings who rule there, as well as of Kriemhild, the princess of Burgundy. Siegfried announces he wants to win her hand in marriage, much to the amusement of the smiths. By way of physical violence, Siegfried demands to be told the way. Mime, who is envious of Siegfried's skill as a swordsmith, claims there is a shortcut through the Wood of Woden; in reality, this route will lead Siegfried away from Burgundy and expose him to attack from the magical creatures inhabiting the wood. During his journey, Siegfried discovers a dragon, and deviates from his path to slay it. He touches its hot, yellow blood and understands the language of the birds, one of which tells him to bathe in the dragon's blood in order to become invincible to attack — except for one spot on his shoulder blade, which is missed after being covered by a falling lime (linden) leaf.