A giant worm tunnels under the farm and causes havoc. It attacks Gabby, Johnny and goes after Mr. Leopold in the field. The gov't UFO hunter and the Elephant tracker arrive at the farm just after the kids miniaturize it into the orb cage.
As the ship crashed some of the Endlings became full size creatures. The alien shows them how to shrink them back into their ball cages. Mr. Leopold is unaware of all this.
The fight to save Endlings continues as Julia, Johnny, Tabby, and Finn track Hewes to her Infinitum facility; when Hewes cracks open an orb releasing a dangerous creature, the heroes have no choice but to bring the fight to her.
A space craft crashes on Mr. Leopolds farm, and his four foster children get involved with helping the alien inside it. The cargo is "Endlings", end of the line animals and creatures who have been temporarily miniaturized for transport.