Kouji and his friends have defeated Dr. Hell and are now enjoying a break, but suddenly a strange prophet appears and warns everyone of an oncoming danger, mechanical beasts never seen before start appearing all around the world wrecking havoc. Its up to Kouji and his Mazinger Z to stand up to this threat but it seems he is vastly outnumber and outmatched.

This film served as an alternative link between the Mazinger Z TV series and the Great Mazinger TV series. It basically introduces Great Mazinger to the audience, as well as his enemies from the Mikene Empire.

A dying mob boss entrusts Lupin with a diamond that supposedly is the key to a vast treasure. But when Lupin is attacked by an assassin and saves a mysterious girl from trouble, it becomes clear that that there's more to this treasure then meets the eye... 

(Source: ANN)

As the human race evolves, so does its technology. Engineers have successfully created robots dubbed "Labors" for mass distribution, utilized by society for a number of everyday tasks. However, there are criminals who manage to get their hands on these Labors, using them for their own nefarious means. To combat this new form of delinquency, police around the world begin using "Patrol Labors" or "Patlabors" to put a stop to Labor-related crimes. Rookie police officer Noa Izumi is drafted into a special Patlabor unit, getting her own mechanical suit to fight crime. Naming this machine Alphonse, Izumi works tirelessly alongside her peers to keep civilization safe from those who would use this advanced technology to harm others. As Izumi becomes further ingrained within her unit, she must also learn how to navigate both her social and professional spheres with grace and wit. She befriends the aloof Asuma Shinohara, fellow pilot Isao Oota, and the other members of her brigade as she helps them to combat conspiratorial plots, workplace revolts, and supernatural beings. [Written by MAL Rewrite]

The carefree Tsunami is next in line to rule over the Magical Kingdom of Juraihelm. But before she is officially crowned as queen, she must restore balance to the universe that has come to favor darkness. To accomplish her goal, Tsunami gives the ordinary Sasami Kawai a magical baton that can transform her into a magical girl. She also appoints the rabbit-like creature Ryou-Ouki to aid Sasami in the battle against evil. However, Sasami refuses to become a magical girl—not because she is scared, but because she finds it too embarrassing! Meanwhile, the arrogant Ramia is plotting to overthrow Tsunami by enlisting her own magical girl—the eccentric Pixy Misa—to cause chaos and ensure that balance is never restored. As Pixy Misa terrorizes the planet with her Love-Love monsters, Sasami must learn to swallow her pride and accept her role as the universe's champion of justice, Pretty Sammy. [Written by MAL Rewrite]