Blake, Lola and Glenn are excited to be attending this year's Doctor of the Year Convention or DOY in Vegas. Even though Blake has won six years in a row, Glenn and Lola are determined to win. Owen tags along to visit his mom, with surprising consequences.
With the threat of the prophecy looming over their heads, Klaus and Elijah find themselves rendered useless inside a magical trap, while Aya and The Strix's coven of witches move forward with a risky spell that could take one of them down for good. Elsewhere, Freya leads the charge to get her brothers back and enlists the help of Marcel, Hayley and Stefan Salvatore, an old friend of Klaus', whose unexpected arrival may be the key to their survival. Finally, Davina moves forward with a dangerous plan that brings her one step closer to reuniting with Kol.
In order to lure a vengeful vampire hunter named Rayna Cruz away from his friends in Mystic Falls, Stefan heads to New Orleans, where Valerie has learned of a safe house that can protect him. Once there, he comes face to face with Klaus Mikaelson, who soon becomes suspicious of his old friend's unexpected arrival in his city. Meanwhile, Enzo, who is working on behalf of a mysterious organization called The Armory, approaches Damon and Bonnie with a plan that could protect Stefan from Rayna. Finally, after learning that Alaric has decided to leave for Dallas with the twins immediately, Caroline offers to accompany them on the trip and finds herself contemplating her own future in Mystic Falls.
The race continues in Colombia, where claustrophobia could prevent a racer from going deep into the catacombs to retrieve their next clue.
An old man collapses in his bathroom, gasping for air. The caregiver tries to save him while her son calls for help in vain. This accident isn't what it seems, though. and the true story reveals murder.
Pritchard needs to try and hide his history with Wally, who is now dating his daughter, Helen, after it is discovered that Wally is being coerced by a prisoner planning an escape.
A woman pitches a product that can relieve back pain; a brother and sister team have a cool way to reduce inflammation in the body; a mechanical engineer hopes to lock in a deal with his high-tech bike lock; and a woman shares her passion about her gourmet tea shots that can be prepared just like espresso drinks. Also, an update on PiperWai, an all-natural deodorant made from activated charcoal, in which Barbara Corcoran invested in during Season 7.
Harry, Gordon and Jimmy publicly announce the purchase of Whiteley's, claiming it to be an exciting project that will cement the future of the Selfridge legacy. However, while later helping out Crabb with the Whiteley's accounts, Harry makes a worrying discovery. Grove is forced to admit it's time to retire, while Meryl makes a stand to her father in order to get Tilly reinstated. Jimmy starts to arouse suspicions when questioned about Victor, and a sudden tragedy sends shockwaves through the store.
There are whispers of ritual sacrifice when a mutilated body is found at City Halls newest development site. Convinced that there is more to it than that, Harry puts Suris life at risk.
An Ethiopian church claims to be housing the Ark of the Covenant. But is their assertion to be believed Join Jamie Theakston as he ascertains the truth.
A frozen cut forces Parker to divert a creek and mine the thawed pay gravel beneath. Tony faces disaster when he breaks his dredge buckets and Todd doubles down with a second monster washplant.
When Jenny makes the decision to confront her father, family turmoil from the past rises to the surface. Meanwhile, Atticus Nevins returns to town, bringing more danger than the FBI could have imagined.
A down and out pro-boxer immediately moved his family to Las Vegas after winning a $1,000,000 scratcher. He calls on David Bromstad to help choose his Vegas dream home in a beautiful gated community.
Brittney and Lucas decide to keep their hookup a secret. A body language expert exposes who's really over their ex. Lucas pursues Margot, infuriating Roxy. Samantha and Sean's relationship implodes.
Masha helps the Wolves turn their abandoned ambulance into Pimp My Ride, Siberia Edition. However, the wolves can't read instructions and the repairs get very weird.
The killer finds the hiding site, though Kayo luckily manages to avoid being seen. Realizing she's still in mortal danger, Satoru tries to find a way to save her life, but worries about whether it will actually work.
Three pairs of teammates scramble to match a funny set of Hula outfits. Then, they rush to the pool to toss tubes onto slippery islands before using their smarts to solve a very special puzzle.
Linda needs Danny and Baez's help after a co-worker has difficulties with an angry ex. Erin's former mentor has been giving out unfair sentences following the death of his wife.