Season 1
Episode: 1x01 | Airdate: Jan 17, 2011
Mike Funkanaga forms a secret team of crimefighters after learning he's a descendant of ninjas. Mike's holographic grandfather counsels him, and then he and his friend try to rescue a classmate who's being held for ransom.
Episode: 1x02 | Airdate: Apr 16, 2011
The ninjas try to stop an antiques thief who has a talent for knife throwing.
Episode: 1x03 | Airdate: Apr 23, 2011
Infamous criminal Two Ton Harley breaks out of jail so that he can get sent to a different prison, where he can be with his motorcycle gang.
Episode: 1x04 | Airdate: Apr 30, 2011
The ninjas go after the menacing Checkmate following the disappearance of an undercover cop.
Episode: 1x05 | Airdate: May 7, 2011
Craving adventure, Owen infiltrates a menacing gang to rescue an old pal. Meanwhile, Mike and Amanda try to soldier on without him.
Episode: 1x06 | Airdate: May 14, 2011
Amanda's biology teacher puts her in jeopardy after he mutates while conducting a secret experiment with insect DNA.
Episode: 1x07 | Airdate: Jun 4, 2011
An ecoterrorist targets a commercial developer who has little regard for the environment.
Episode: 1x08 | Airdate: Jun 4, 2011
A recently released jewel thief wears disguises while committing crimes, hoping to get revenge on those responsible for incarcerating him.
Episode: 1x09 | Airdate: Jun 25, 2011
Amanda is captured by a doll-masked villain who transforms people into living dolls for his collection.
Episode: 1x10 | Airdate: Jul 23, 2011
The ninjas track X, an enigmatic assassin who's after a key witness that Mike's dad is protecting during a trial.
Episode: 1x11 | Airdate: Sep 10, 2011
A computer geek leads a secret double life as a superhero, but his alter ego gets in trouble when he angers a mob leader.
Episode: 1x12 | Airdate: Sep 17, 2011
Mike and Owen investigate the case of a missing magician. Meanwhile, Amanda tries to make amends to Cameron after repeatedly canceling plans with him.
Episode: 1x13 | Airdate: Sep 24, 2011
A gang of expert thieves go undercover as prep-school girls, and the ninjas must covertly take them down while on a field trip.
Episode: 1x14 | Airdate: Oct 1, 2011
The kids attend a concert at school, where they are shocked to learn their favorite DJ is really a villain.
Episode: 1x15 | Airdate: Oct 10, 2011
Owen hosts a party on the same night as the popular kids, and Amanda attends both.
Episode: 1x16 | Airdate: Oct 15, 2011
A psychiatrist wants to experiment on the ninjas to see if he can transform human nature from good to evil.
Episode: 1x17 | Airdate: Oct 29, 2011
The feared Ishina Clan release a computer virus, which they hope will ruin the ninjas' lair.
Episode: 1x18 | Airdate: Oct 29, 2011
The Ishina Clan kidnap Mike's cousin and demand the Floating Sword as ransom.
Episode: 1x19 | Airdate: Nov 5, 2011
Mike's pals encourage him to ask out Julie, and soon after he learns about Amanda's breakup. Meanwhile, a colossal creature known as Quake wreaks havoc on the city.
Episode: 1x20 | Airdate: Nov 12, 2011
Mike grows tired of doing police ride-alongs with his dad, but this time they encounter dangerous foes: Mechanov's human-machine hybrid offspring.
Episode: 1x21 | Airdate: Nov 19, 2011
A vengeful escaped convict poses as a student, and the ninjas attempt to identify him while they're serving detention.
Episode: 1x22 | Airdate: Dec 27, 2011
Mike thinks the Skeleton Crew is burglarizing the city. Meanwhile, Owen pursues a new girl in school, unaware that she's really a detective doing undercover work.
Episode: 1x23 | Airdate: Jan 7, 2012
A former child star tries to recapture the fame of his youth by snatching celebrities. Meanwhile, Owen has trouble hiding his ninja skills.
Episode: 1x24 | Airdate: Jan 14, 2012
Amanda assists Mike in preparing for his date with Julie by staging a practice date with him.
Episode: 1x25 | Airdate: Jan 21, 2012
The trio are reminded of what being a ninja really means when Grandfather stages an intervention.
Episode: 1x26 | Airdate: Jan 28, 2012
The ninjas betray each other because of Connor, who then discloses his real identity and battles his cousin Mike.
Season 2
Episode: 2x01 | Airdate: Feb 9, 2013
Connor's motives become clear to the trio, who realize they've underestimated how big of a threat he is.
Episode: 2x02 | Airdate: Feb 16, 2013
Amanda gets a crush on a robber named Flint, and Owen mistakenly thinks she's enamored with Mike.
Episode: 2x03 | Airdate: Feb 23, 2013
A photo of Owen in his ninja gear goes viral, and an impostor snatches all the glory from him.
Episode: 2x04 | Airdate: Mar 2, 2013
Mike gets grounded, which complicates his mission to halt Evil Grandpa and the Ishina from finding the dojo.
Episode: 2x05 | Airdate: Mar 9, 2013
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.
Episode: 2x06 | Airdate: Mar 16, 2013
Mike and Owen pose as cheerleaders to stop a vengeance-seeking rival from Amanda's past.
Episode: 2x07 | Airdate: Mar 30, 2013
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.
Episode: 2x08 | Airdate: Apr 6, 2013
The ninjas get Kid Q to repair the dojo, but he causes problems when he releases Two Ton Harley.
Episode: 2x09 | Airdate: Apr 13, 2013
Mike must rescue Flint and Amanda after they're abducted by a classmate who's a credit-card counterfeiter.
Episode: 2x10 | Airdate: Apr 20, 2013
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.
Episode: 2x11 | Airdate: Apr 20, 2013
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.
Episode: 2x12 | Airdate: Apr 27, 2013
Flint asks Amanda to a dance, and she then gets abducted. Later, Amanda must decide whether to go to Paris to study.
Episode: 2x13 | Airdate: Apr 27, 2013
Connor returns and makes a discovery about Kata and its role in locating the Floating Sword. Meanwhile, Amanda gets the results of her career-aptitude test.