Nickelodeon’s new series “The Thundermans” begins this week and you can download an episode for free from iTunes. It’s the story of a superhero family, twins Max and Phoebe, their younger siblings Nora and Billy, and their parents Hank and Barb. The twins partake in a little sibling rivalry when Max plans to sabotage his sister’s dinner party, when they compete against each other in the Math Bowl, and when a prank war breaks out. The twins eventually start to work together as a pesky plant takes over the house, and they get into some ditch day trouble at school. Max must create a clone of Phoebe when she has to be in too many places at once, the twins help each other fill a big order at their new pizza parlor jobs, and much more. Watch this super family work together to use their extraordinary powers to create an ordinary life.