In the second-season opener, Connor's motives become clear to the trio, who realize they've underestimated how big of a threat he is.

Source: Nickelodeon

Amanda gets a crush on a robber named Flint, and Owen mistakenly thinks she's enamored with Mike.

Source: Nickelodeon

A photo of Owen in his ninja gear goes viral, and an impostor snatches all the glory from him.

Source: Nickelodeon

When Mike gets grounded for sneaking out, he is angry and follows his dad when he leaves. He finds out his dad lied to him when he told him he had a minor thing at work. Mike and Amanda flirt and she feels she doesn't know who to choose.

Owen partners with a whiz kid for the science fair, and their invention gets stolen by a scientist's assistant who's looking for revenge.

Source: Nickelodeon

Kylie, a rival cheerleader, comes to the High School and Amanda is suspicious of her. When Kylie gets head cheerleader and Owen and Mike go undercover to find out she has plans to rob a bank. However, as the day goes by a more sinister plan is evolving.

Mike throws an impromptu birthday party for his dad, but problems arise when the Ishina show up, forcing Mike to persuade Martin to leave his own celebration.

Source: Nickelodeon

The ninjas get Kid Q to repair the dojo, but he causes problems when he releases Two Ton Harley.

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Mike must rescue Flint and Amanda after they're abducted by a classmate who's a credit-card counterfeiter.

Source: Nickelodeon

Owen pursues a girl he has a crush on, while a different girl sets her sights on him. Elsewhere, Mike and Amanda have fun together despite getting injured while auditioning for a game show.

Source: Nickelodeon

The ninjas investigate a social-media celebrity who wreaks havoc by starting flash mobs. Meanwhile, Owen bonds with Paloma, whom Mike and Amanda are hesitant to trust.

Source: Nickelodeon

Flint asks Amanda to the Spring Fling; Mike must team up with Flint to rescue Amanda; Amanda must decide if she is going to stay in Empire City or study in Paris.

Source: Nickelodeon

Cousin Connor returns as a spy and learns that the Kata is the key to finding the floating sword; Amanda struggles with the results of a career aptitude test.

Source: Nickelodeon