When Zorn travels from his native land of Zephyria to California to visit his son, Alangulon, aka Alan, he learns that his ex-wife, Edie, has a fiancé. But to reconnect with his son, Zorn stays and obtains a job where, despite his "unique" qualities, he is welcomed by his new boss.
After embarrassing Alan in front of his crush, Nancy, Zorn uses the Stone of Sight to spy on the girl for his son. Meanwhile, Edie is determined to move on and forces Zorn to finally move his old boxes out of her garage and into his own apartment.
When someone steals hot sauce from Sanitation Solutions' break room, Zorn attempts to fight back with his co-workers in his own style of fighting. Meanwhile, Alan tries to get out of a swimming session in gym class for fear of exposing his secret, while getting bullied by a student named Warren. In the process, Alan learns something about himself that he never knew.
Zorn tries to be a "cool dad" when Alan spends the weekend with him, but things take an unexpected turn when Alan's friend Jeff shows up.
Zorn tries to teach Alan about his Zephyrian culture. Meanwhile, Edie goes to war with her new neighbors over their talking garden gnome.
Zorn uses his body double dummy "Meka-Zorn" to sneak out of work and wait in line for the latest video game in a series that has Alan and Craig bonding, while Edie and Linda take their frustrations with Zorn out on the dummy.
Following a pep talk with Linda, Zorn crashes Edie's Thanksgiving dinner to prove to her mother that he's matured, only to hear her views on Zephyria. Meanwhile, Alan tries to butter up his grandmother so she'll pay for his summer music camp.
Zorn's old friend Headbutt Man is visiting from Zephyria, except that he's now sober. In the meantime, Alan is invited to a party being attended by his crush Nancy, but he has to bring Headbutt Man's daughter.
Torn between celebrating Edie's Christmas and Zorn's Grafelnik, the Zephyrian holiday of revenge, Alan discovers he can use both holidays to pit his parents against each other and get better presents. Meanwhile, Craig works to face his fear of Santa Claus.
With Craig and Edie's engagement party around the corner, everyone is figuring out who to bring. Alan struggles to figure out his relationship status with Layla, while Zorn rekindles with his ex, Radiana, who is literally radioactive. All the while, Craig has just received his certificate in relationship counseling and is helping others, but just can't seem to help himself.
Craig is worried he's not man enough for Edie and asks Zorn to help him become a warrior. Meanwhile, to get closer to Layla, Alan finds a way to change the thing about which he's most insecure, but ends up going to extremes.
Craig has not been in contact with Edie for days, following Alan's Zephyrian drug incident. Edie enlists Zorn and Linda to help find him. Meanwhile, Alan allows his animated legs to be shown in front of his classmates, who are impressed with them. Alan's powerful animated legs lead to the football coach asking Alan to join the football team when his lead kicker gets deported.
Seeing an opportunity to get Linda's old job back, Zorn increases Sanitation Solutions' business by tapping into the Zephyrian market. Alan tries to win Layla back by becoming Prom King - with Zorn's help. Zorn gets captured by Lord Vulchazor's forces and ends up on a freighter ship sailing toward Zephyria, where Lord Vulchazor is unaware that the Staff of Quiv that he is looking for has been sold at a yard sale.