Shadows (film)/Plot

Shadows are dangerous serial killers who have existed since the beginning of time, evolving from blackish-gray ashes into single-celled organisms into beings who have only one purpose: to serve history's most villainous bosses. They successfully find great masters, including a T. Rex, a caveman, an Egyptian pharaoh, Dracula, and Napoleon, but after accidentally executing them all soon after, they decide to isolate themselves from the world and start a new life in Antarctica.
By 1968, the lack of a master drives them into depression, so fearless leader Michael comes up with a plan to find a new one for his Mankind. He is joined by rebellious Jason and Freddy (who unwittingly were selected).
After a long journey, the Shadows arrive at New York, where at a shopping center on TV, they learn about Villain-Con, a villain convention where super-villains from around the world gather, which is to be held in Orlando, Florida. They manage to hitch a ride to Orlando, where coincidentally, the family who drove them are criminals heading to Villain-Con as well. After seeing various super-villains, they finally become the henchmen for The Scarlet Bloodshedder, the world's first female serial killer.
Scarlet takes the Shadows to her residence in London, where she instructs the Shadows to go to the mayor's house. They do in the middle of the night. The Shadows try to comfort the mayor with flowers. Instead the mayor decides to fire Queen Elizabeth II and takes St. Edward’s crown, walking away telling his stuffed bear Mr. Snookums how great he is.
Michael helps Elizabeth pack, but starts to cry, blaming it on his allergies. Soon, all the Shadows and royal family get allergies too and start crying, flooding the entire building. However, the Scarlet Bloodshedder drives Elizabeth out and scold her for getting fired. Elizabeth then walks sadly out, crying for help. The next day, the Shadows break in the Tower of London, where the mayor was last seen. The Shadows try sneaking the crown back for Elizabeth, they get pursued by the police. In the process, Freddy crash lands on top of a tree and runs to the mythical Sword in the Stone, where he pulls the sword Excalibur out easily to defend himself. Suddenly, Freddy is crowned as the new King of the United Kingdom.
Convinced they are traitors, Scarlet confronts the Shadows, attempting to execute them, then she craves her revenge. King Kruger eventually abdicates in Scarlet's favor. However, Scarlet ultimately betrays the Shadows, locking them in the palace dungeon where they are to be tortured by Herb, although this backfires due to their unusual shapes and abilities. When Herb goes to attend his wife's coronation, the Shadows escape the dungeon through a sewer, intending on apologizing to Scarlet.
At Westminster Abbey, the Shadows accidentally interrupt Scarlet's coronation by unscrewing a chandelier, which falls and crushes Scarlet before she could be crowned. Scarlet orders the attendees of the coronation, some of which are super-villains, to execute the Shadows. Jason and Freddy are captured while Michael hides in a bar, where he finds Elizabeth working there. After learning that Scarlet is going to execute Jason and Freddy, Michael breaks into Herb's laboratory, where he triggers a machine which turns him into a giant and destroys the Scarlet Bloodshedder’s residence. Simultaneously, the rest of the Shadows land in Britain.
Michael rescues his companions from execution as the army of Shadows arrive in London. Scarlet is distracted by the army of Shadows and Michael knocks her away, however the super-villain attempts to escape with Herb using her dress rocket. Before escaping, Kevin is able to hold onto her rocket, seemingly killing her and Herb and shrinking himself back to his original size.
Elizabeth is once again crowned Queen of the United Kingdom and, in front of a crowd, presents Freddy, Jason, and Michael with their rewards: a tiny crown for Freddy, an electric guitar (later replaced by a snow globe) for Jason and a knighthood respectively for Michael. Scarlet is suddenly revealed to be alive and snatches the Queen's crown with Herb, but she is stopped and frozen by young Gru. Scarlet is disappointed until Freddy gives her his tiny crown. At the end of the film, the Shadows see Gru as their new potential boss and chase after him.