A crew rebellion forces Todd Hoffman to dig test holes on the claim. The tension mounts as they wait to see if they're sitting on a gold-rich paystreak or about to go bust. Then, Fred is forced to abandon mining as floods in North Dakota destroy his home.
Clare finds out Jenna has stolen another ex-boyfriend, Jake, whom he has invited to his birthday supper. When diving into vampire fiction is not enough of an escape, and her father does not have room, Clare moves in with a group of friends she had previously met. Connor makes it on to the football team, but has trouble fitting in, especially with Mo. Fiona continues to hang out with Imogen, but when she realizes she has feelings for her, Fiona decides Imogen should date Eli.
Kate returns to work and mediates a case between a corporation and former employee whose granddaughter claims he was exposed to harmful chemicals.
While Spartacus finds an opportunity to get revenge, Glaber is surrounded by intrigue.
Generator Rex, an average teenager with the ability to turn his body into amazing machines, helps the secret organization Providence save the world from the nanite threat and dangerous EVO monsters.
In an attempt to win Kitty back, Harry ends his relationship with Natasha, thereby scuttling plans to get Noel out of prison. Meanwhile, Lola realises that Harry remembers everything and begs for forgiveness.
Rex must risk everything on his ultimate build in the final battle with the Consortium.
The present-day murders in Mystic Falls remind Damon of a similar crime spree a century earlier. In flashbacks to 1912, Damon recalls a beautiful vampire, Sage, who showed him a whole new way to exist. Sheriff Forbes warns Damon not to get involved in her investigation, but Damon is convinced she’s going after the wrong suspect. Elena and Matt resort to breaking and entering in their search for evidence to prove Dr. Fell is a murderer. For reasons known only to her, Rebekah, becomes interested in locating one of the town’s oldest landmarks. Finally, Elena comes to a new understanding of the path her life has taken, and Damon makes an emotional confession to Stefan.
Derek encourages a hesitant Meredith to work with him again in neurology; Jackson's mother, Catherine Avery, returns to Seattle Grace with a urology fellow and develops an interest in Richard; and Cristina becomes increasingly suspicious of Owen's every move. Meanwhile, Alex tries to deny the fact that Morgan may be falling for him.
Jack feels unworthy of his latest award and attempts to redeem himself by taking on the writers in a strategic board game. Liz believes she's cursed on St. Patrick's Day when her ex-boyfriend Dennis shows up to derail her relationship with Criss. Meanwhile, Hazel struggles to keep the peace between Tracy and Jenna.
Cassie catches Blackwell sneaking around the abandoned house. After confiding in Adam, he tells her he knows Blackwell was looking for a device to drain witches’ powers and clearly back to his old ways. Faye shows up at Lee’s house to invite him to the school fundraiser, but is taken aback when Eva greets her at the door claiming to be Lee’s girlfriend. Meanwhile, Melissa encourages Diana to date a normal guy and points her in the direction of a new, handsome guy in town. Dawn runs into Blackwell at the school but the reunion isn’t quite what she expected.
Rex is kidnapped by an escaped convict Michael arrested 10 years ago; an investigation in Michael's other reality gets in the way of an event honoring his deceased son; clues from both realities lead to Michael's sanity being questioned.
When Shirley's remarriage to Andre threatens to put her dreams of starting a business with Pierce on hold, Britta steps in.
Chris pulls out all the stops to convince Reagan to have another baby. Meanwhile, Ava's decision to join a mentorship program, started by Yvonne Encanto, has less than stellar results and Missy is worried she's cheating on Ava by helping Luke.
Andy makes a game-changing decision and takes a road-trip odyssey in the name of romance. Elsewhere, Nellie arrives at the Scranton branch and sets out to seize the manager position.
Turning her attention to Adam and Rachael's bathroom, Nicole deals with the many problems that creep up while working with tile in an old house. When she hits a snag, Nicole must think on her feet and figure out a way to make her fixtures fit in the small space. As her deadline approaches and working hours get longer, Nicole begins feeling guilty for not spending more time with her son Ethan.
Another summer in Seaside Heights comes to a close as Hurricane Irene batters the East Coast in the Season 5 finale. As the gang prepares to leave, Mike continues to cause trouble by starting a rumor about Deena's sister, while Pauly and Vinny pull one more prank on the roommates.