Chase feels that it is unfair to be picked on by Adam every time and tells Donald. Douglas overhears and unlocks a new ability for Chase, upsetting the balance in the house. Douglas tries to fix things by giving Adam a new ability as well, but Adam and Chase end up fighting with one another. Meanwhile, Bree tells Leo about a contest at Tech Town as they are about to hit their one-millionth customer and Leo competes to ride on the first anti-gravity roller coaster and meet the owner of Tech Town. Principal Perry tries to compete to crush Leo's dream. In the end, Chase and Adam have a death battle, but eventually forgive each other and find out that Douglas gave Bree the ability to go invisible, scaring everyone in the lab.
Lulu and her brother, Jelani, are going to participate in a village festival. However, they need to practice their drumming skills. When they went off to get a snack, a mountain gorilla came down from a tree and starts beating the drums. Unfortunately, the gorilla gets scared and runs off, after seeing Lulu run towards him. How would Jett and his friends get the gorilla to come back and perform with them?
A woman from Ichabod Crane's past comes to Sleepy Hollow in the form of an un-dead Weeping Lady, aiming to harm anyone in her path. Katrina and Crane learn unsettling things about each other's pasts. Abbie has some unexpected flirtatious encounters.
Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel deep underground. Meanwhile, Leonard and Penny seek advice from Howard and Bernadette after they fight about money.
When an ice cream vender is shot, evidence leads Beckett and Castle to believe that an unknown second-grader may have vital information about the case. Castle goes undercover at an elementary school to try and identify the second-grader but nothing goes as planned.
Jane's mother puts pressure on her to sue her doctor. Jane keeps running into Rafael. Jealousy forces Michael to turn to Petra as an ally.
Gordon and Bullock search for the source of a new street drug that causes euphoria then death. Oswald Cobblepot works his way deeper into Maroni's inner circle. Fish Mooney continues to plot against Falcone.
Slotter discovers that his son has been thieving. Isabelle trades her services for much needed cash. Kat is a witness to the cold blooded murder of a travelling preacher.
Murdoch and legendary lawman Bat Masterson unite to hunt for Butch Cassidy and the Sundance kid.
The team targets an eco-terrorist cell seeking a deadly weapon. Liz attempts to lose her guardian. Red resorts to manipulation to pursue a special someone.
A mysterious Ghost is causing havoc around the Lookout at night. The Pups and Chase in his new SPY GEAR set up a stakeout to bust it.
Jeffries gets more than he bargained for when he follows Tom and his friends.
James is in custody and the police remain convinced that James is guilty, but Ruth has doubts that draw her to Elizabeth Marshall's hospital bedside. James uses his one call from the police station to reach his friends. He needs someone to contact a mysterious man who will be able to provide him with an alibi. Rob isn't convinced James's plan will work, but finds himself on a dangerous mission.
The Pups are going to put on a Medieval play in town square, but Cap'n Turbot's castle stage prop ends up collapsing and trapping him!
When Richard buys a '65 Chevy Impala, they put their Gas Monkey spin on it. Richard and Aaron score a 34 Five Window Ford. And later, Richard agrees to cool off the monkeys with new air conditioning, but the Fired Up crew gets hot and bothered about it.
A mix tape from 1983 is discovered, containing the voice of a teenage girl who was murdered shortly after it went into her school's time capsule. Griffin becomes convinced that the girl is reading from a speech secretly prepared for the Queen to broadcast in the event of a nuclear war. Meanwhile Sasha is distracted by a romantic entanglement with a charming record shop owner and Gerry is dreading his future son-in-law Robin's stag night, which promises to be something very special...
Kaz and Oliver are trapped in the ER by an evil Skylar and the Annihilator and the two villains plan on taking over the hospital and eventually, the world.