The series stars Kira Kosarin, Jack Griffo, Addison Riecke, Diego Velazquez, Chris Tallman, Rosa Blasi, and Maya Le Clark, and features the voice of Dana Snyder as Dr. Colosso.
The two oldest children, twins Phoebe and Max Thunderman, must babysit their younger siblings, Nora and Billy, while their parents, Hank and Barb, go out to dinner.
Just as Hank reminds the children about no non-superheroes in the house, Max plans to sabotage dinner when Phoebe invites her crush, Cole Campbell, and his rich family over.
This forces Phoebe and Max to work together to keep the night from turning into a complete disaster, while they also deal with Nora, Billy, and their parents, who are embarrassing them and their guests.
In his lair, Max watches a wrestling match on the 3D TV, while Hank accepts a bet to break Billy's indestructobot, but is repeatedly unsuccessful in doing so.
Guest stars: JT Neal (Scott Tomlinson), Chase Austin (Chad), David Ury (Green Ghoul), Daniele Gaither (Super President Kickbutt) Phoebe wants to win tickets to an MKTO concert.
The Epic Fallerina video becomes an instant hit, attracting a lot of people to buy Phoebe's tickets to see her fall during the ballet performance.
When Max confesses to Phoebe that he is the culprit of deliberately embarrassing Principal Bradford, she promises to protect his identity, causing her to become lunch lady at the school after being suspected of lying.
However, Phoebe saves him with help from Cherry, who watches, when she tickles Chloe and causes her to release bubbles, and Max defeats the Supervillain League.
Meanwhile, Billy gets an illness after not taking an important bug, and as Chloe has her final growth spurt, everybody is eager to find out what her new permanent superpower is, which are narrowed down to teleportation, super strength, or sonic screaming.
Meanwhile, Hank and Barb are having trouble with Chloe's teleportation and get tired, thinking that it's the weekend when it isn't, so Nora and Billy play along, but later try to gets things back to normal.
When the parents don't believe them, they set up a trap and the noises turn out to be coming from Chloe's stuffed toy, revealing she had been teleporting under their beds because of her fear.
Mistaking Phoebe for an employee, Fefe and Matt reveal their plans to trick Nora and Billy into playing a rigged, live action version of Cybron's new game, Spitballs.
Phoebe follows Evan and after a battle, she learns the league is only going to erase Cherry's phone's memory because she kept posting about the Thundermans' true identity.
Kickbutt allows Phoebe and Cherry to remain friends, and Evan is revealed to be a 50-year old man named Lucius who doesn't age, who gets kicked out of the league after his cover was blown.
However, when he leaves and she realizes she likes him, she uses the Hero League's system to find him and suffers consequences while Max uses Nora and Billy to help him make money for a hoverboard by being a group of ninjas for a birthday party.
The sheriff's men run away, and Phoebe Hood and her merry crew give everyone back their things, but they cannot find Chloe's slippers, because they were stolen by Maxingham, who returns to King Colosso with no money.
Max reveals that he's hidden the furniture and takes the opportunity to blackmail Hank and Phoebe into becoming his personal servants or else he will tell Barb they lied.
When Mr. Silver Eagle returns, he's impressed with Phoebe and Max and tells them that they've passed the test while reassigning Leonard to work with the third-graders for his actions.
Guest stars: Ryan Newman, Maya Le Clark, Audrey Whitby, Helen Hong, Barrett Carnahan, Tanner Stine, Kenny Ridwan, Jake Borelli, Gabrielle Elyse, Jeff Meacham, Camille Manning Hyde, Daniele Gaither When a huge storm makes it impossible for the Thundermans to go out for Halloween and causes the house to lose power, Dr. Colosso offers to tell them spooky stories to scare them off.
Due to Hank and Barbara's show-off after the identities of the families are revealed and Phoebe and Max accidentally causing Mrs. Wong's restaurant to get destroyed, Super President Kickbutt uses a wheel to decide where the Thundermans should be reassigned.
Guest stars: Ryan Newman, Audrey Whitby, Tanner Stine, Helen Hong, Daniele Gaither, Jake Borelli, Gabrielle Elyse, Jada Facer (Candi Falconman), JoJo Siwa (Nora's fan) While submitting their team's special skills to the Z-Force, Max realizes that Phoebe is only planning to submit her skills and so he feels left out because he wants to contribute too.
Super President Kickbutt assigns Max to Metroburg Prison in order to help set some young superpowered juveniles straight.
At the cave Phoebe finds Destructo, Dark Mayhem's sidekick who gives her the plans on how to use Malvezium to spread it through the earth's atmosphere destroying all superpowers on the planet.
They follow Phoebe to Dark Mayhem's lair but she traps them inside a force-field, rendering them powerless as she waits for the volcano lava with Malvezium to erupt.
Finally, the kids all come back in Cousin Blobbin's time machine, only to find out that their parents are at home, which means after they helped Heinrich with his dance contest, everything in their hometown returned to normal.
The visors are wonky, causing Nora's laser blast to destroy a lot of properties in addition to trapping the twins under a giant pizza sign.
Guest stars: Mark McGrath, Helen Hong, Kenny Ridwan, Keely Marshall To recognize Max and Phoebe for saving the school from Dark Mayhem at the prom, Hiddenville High commissions their best artist, Smith to paint a mural of the Thunder Twins.
Meanwhile, Hank is trying to relive his failed childhood dreams of winning Lil Mini Metroburg Talent Pageant by making Chloe participate even though she clearly doesn't want it.
Special guest star: Marla Gibbs Hero League's Super President Kickbutt gets fed up with Max and Phoebe asking her for favors.