Gibbs and Ducky are watching TV when they see the host handling a 200-year-old war stick that could be a match from a decade-old cold case.
After Louis buys Kenny Rogers' stake in Cattleman's Ranch back, he starts to doubt his instincts as sole owner. Frustrated by his cautiousness, Jessica flies in Madam Xing to ease Louis' anxiety, but that only stresses him out more - to the point of breaking a tooth. Marvin's laughing gas finally helps Louis relax, but side effects of strange visions accompany his relief. Meanwhile, Evan gives up watching Regis and Kathie Lee for Lent, leading his older brothers to mess with his head.
Candace works on a new plan to recoup her money from the Cryers; Veronica is preoccupied by an all-consuming desire for revenge
Professor Noel Fitzpatrick treats a Labrador puppy with an elbow disease, and believes a possible solution might involve fitted plates and stem cell injections. Elsewhere, a one-year-old cat is brought in suffering from a crushed pelvis and a broken tail after a road traffic accident, and a Russian Black Terrier with a cancerous growth is at risk of losing his leg.
Team Flash confront a new bus meta, Matthew aka Melting Pot. He has the ability to swap people’s DNA, so during a battle with Team Flash, he transfers Barry’s super speed to Iris. Now, with a new threat unleashed on Central City, Barry must act as the team leader while Iris takes on the mantle of superhero speedster in order to defeat their new foe.
Dre and Bow confront gender biases of their own after finding out that both Junior and Zoey have become sexually active. Meanwhile, Ruby is hurt when she finds out that Jack and Diane have been hanging out with a friend’s grandmother after school.
Chip and Jo meet up with a friend who is hoping to buy a modern-industrial style loft with a guest bedroom and an office in downtown Waco. After finding the perfect spot, Chip and Jo get to work tackling their first-ever downtown loft apartment.
Hortense helps Beatrice find her mystery lover; Lillian adjusts to life in the insane asylum; Garfield searches for his birth parents.
Black Lightning works with Anissa to help find information to clear Black Lightning’s name. Jennifer begins interning for Lynn. Meanwhile, Gambi finds himself in a precarious situation.
The lifeguards take the beach buggy into the streets as they chase down an aggressive beachgoer wielding a knife.
The Pearsons come together to celebrate Kate and Toby's wedding. Wedding planners Kevin and Randall struggle to pull off the big day. Kate is flooded with memories of Jack. Deja struggles to adjust to her new living situation.
Teamwork is the name of the game in a series of Tag Team Tattoo Challenges. A massive twist forces one Team's Artists to turn on their own.
Five novice smiths must earn their way into the competition because one smith will be sent home before the forge lights up; the two left standing must re-create a 16th-century weapon known as the War Golok.
When Jack and Diane get in trouble at school, Dre and Bow have to figure out the right balance of discipline and support so that their kids aren’t too afraid of authority nor entitled either. Meanwhile, Ruby thinks Junior’s Spanish teacher is flirting with him, and he begins to realize that girls at school are starting to check him out.
Brandon and Grace go on a road trip and discover a lot about each other, while Mariana and Emma vie for a competitive internship. Stef and Lena go on a couples retreat to reconnect.
Dodo subjects Beatrice to a harrowing beauty regimen as part of a campaign to get her face on the new nickel; Lillian develops a gambling addiction.
It’s graduation day for Callie and Brandon, but after some shocking news, the family wonders whether they will make it to the ceremony.
The day everyone feared arrives when the Board of Trustees announce the merger is a done deal. Cedric and Ebonie bring back the resistance track to let the Georgia University System know exactly how they feel.
While Frankie feels the need to have a good cry after having a bad week, Mike shares the good news that, after 25 years as manager at the local quarry, he is being offered the job of regional manager but feels uncomfortable saying goodbye to his co-workers. Meanwhile, Brick suspects that he's being treated unfairly by his health teacher because of how horribly Axl treated her back when he was a student.