

With her time running out, she sends the ball of stored quantonium down on herself, restoring her monstrous size and strength. All but Susan are trapped as the blast doors close and she personally confronts Gallaxhar on the bridge. Cockroach sets the ship to self-destruct to prevent the invasion.

They rescue Susan and make their way to the main power core where Dr. Monger manages to the monsters on board the ship. Gallaxhar then uses the extracted quantonium to create clones of himself in order to launch a full-scale invasion of Earth. On board the ship, Gallaxhar extracts the quantonium from Susan, shrinking her back to her normal size. Insectosaurus tries to save her, but he is shot down by the phasoid cannons, seemingly killing him. Suddenly, Susan is pulled into Gallaxhar's ship by a tractor beam. Heartbroken, the monsters reunite, but Susan realizes that her life is better as a monster and promises not to sell herself short to anyone again. Derek breaks off his engagement with Susan, claiming that he cannot marry someone who would overshadow him and his career. However, the monsters alienate themselves from the humans due to their inexperience with social situations. Gallaxhar sets course for Earth to obtain the quantonium in person while the now-free Susan returns home with her new friends and reunites with her family. At the Golden Gate Bridge, the monsters work together to defeat the probe. In San Francisco, the robot detects the quantonium radiating through Susan's body and tries to take it from her, putting many lives at risk. Monger convinces the President to grant the monsters their freedom if they can stop the probe. However, the attempt fails and the probe goes on a destructive rampage, headed straight for San Francisco.

The probe later lands on Earth where the President of the United States attempts to make first contact with it. In a mysterious spaceship in deep space, an alien overlord named Gallaxhar is alerted to the presence of quantonium, a powerful energy source on Earth, and he sends a robotic probe to retrieve it. Susan herself has been renamed to Ginormica. (Benzoate Ostylezene Bicarbonate), a brainless, living mass of goo as a result of a food flavoring mutation Insectosaurus, a massive mutated bug standing 350 feet in height that attacked Tokyo, and the Missing Link, a prehistoric fish-ape hybrid who was thawed from deep ice. Cockroach PhD, a mad scientist who became half-human, half-cockroach after an experiment B.O.B. Monger, the Army officer in charge of the facility, and her fellow monster inmates: Dr. She is tranquilized by the military and awakens in a top secret government facility that houses monsters of which the public are ignorant. Just before the ceremony, she is hit by the meteorite and its energy causes her to glow green and grow to enormous size. Meanwhile, Susan Murphy of Modesto, California is going to be married to news weatherman Derek Dietl. In the far reaches of space, a planet explodes sending a strange meteorite across the galaxy, heading towards Earth. It will appear on YouTube in the near future. It is a quintuple feature with The Irelanders meets The Smurfs (franchise), The Irelanders' Adventures of Detective Pikachu (Video Game), The Irelanders' Adventures of Cloudy With A Chance of Meatballs (1 and 2) and The Irelanders' Adventures of Mickey, Donald and Goofy in The Three Musketeers.

Aliens is the 1st YIFM/DreamWorks crossover made by Connor Lacey.
