Sounds of a party at sea fill the night fill the night as a yacht cruises across the ocean. Emily Thorne, dressed in a beautiful, flowing white dress, steps forward as someone approaches her on the deck. She says, "I'm sorry." BANG! BANG! Gunshots rip through the white dress as it becomes stained with gushing blood. Emily is jolted overboard into the water below. Waves engulf her as we jump back two months to dive into the events that led up to the shooting on the yacht. Until we live through another summer in the Hamptons, one question will remain: Who shot Emily Thorne?
A lot happened since that fateful day when Emily revealed the truth to Jack that she is actually his first love, Amanda Clarke. One thing that hasn't changed is that Emily is still with Daniel. They chat about the upcoming Grayson Memorial Day kickoff. It'll be a bit of a family reunion considering no one has heard from Victoria for the past six months. That's because she's been busy getting to know her long lost son, Patrick (guest star Justin Hartley), while riding horses every day in the country. Charlotte has been living overseas after having lost Declan and their baby.
Nolan is released from prison after the failsafe his placed in his Carrion program cleared his name and took down the Initiative, a group he's happy to never mention again. Emily's formerly incarcerated pal is grateful for the new beach home she bought him, but promises that his hacker days are behind him... for now. He'll have to find other ways to help Emily with her long summer of retribution fun. Ashley Davenport quickly places herself on Em's revenge-y radar by trying to get her hooked up with some men of standing or else risk exposure.
Speaking of exposure, or overexposure, the portrait of Governor Conrad Grayson is still missing the depth in his eyes. There should be "arctic pools" in there. The artist has one day to do touch up work before the unveiling at the Memorial Day bash Emily is throwing. One of the guests in attendance will be a lady acquaintance from Daniel's past named Margaux LeMarchal (guest star Karine Vanasse). Now if Emily can only get Victoria to show up. She claims Ashley is trying to blackmail her by saying the queen is having an affair. She also promises to keep Patrick a secret as long as Victoria shows at the party.
Security is tight at the Memorial Day kickoff, as Conrad is entertaining a presidential run. He's also planning to put Grayson Manor on the market. That means its current hidden houseguest, Patrick, will need a new place to crash. Charlotte is shocked when she meets the brother she never knew she had. She gives him the 411 on their destructive mother. It appears to be enough to scare off her newest big bro. Victoria is stunned and saddened to see that Patrick is going back home to the city.
The Stowaway has been closed for the season. Its owner, Jack Porter, has returned for the summer after spending time away introducing Carl to his extended family. Emily apologizes for not telling him the truth sooner. Jack claims he understands, as he now knows the bond of love a child has for a father. He kisses Emily passionately. Jack needs to know how he feels about her. Emily is shocked when he says he doesn't feel anything. He'll keep her secret, but it's just him and Carl now. He instructs Emily to leave them alone.
The day of the big party arrives. Emily introduces Ashley to Dr. Jorge Velez to keep her happy. She also meets Margaux, who reveals her plans to start a new magazine. Nolan arrives a tad late, but in memorable fashion by paragliding into the middle of the affair. It causes quite the uproar. Emily offers Conrad a bottle of water to calm him down before the portrait unveiling. Arctic pools, remember? Conrad steps up to the podium to make a speech but struggles mightily. Then he collapses to the ground. At the hospital, Dr. Velez reveals to the family that Conrad has Huntington's Disease. It's progressive and fatal.
The press gets wind of the governor's situation from a source close to the family. This means he'll have to step down from his political post. Emily leads Victoria to believe that Ashley is the leak. After all, she was very chummy with the doc who made the diagnosis. The two ladies send Ashley off on a plane by assuring her that they won't stick her with a slew of criminal charges as long as she goes away forever. So she does. Emily later puts that familiar red X across a photo of Ashley's face.
Jack knows that Emily is behind what happened to Conrad. It's true. Nolan slipped his partner in revenge a vile containing a solution that would make Conrad ill. Emily later doctored the doctor's report to state that Conrad has the disease. Jack advises her to finish what she's doing by the end of the summer or he'll be forced to tell the truth. Emily picks August 8th for her wedding day with Daniel. Nolan draws the date in the sand. It looks a lot like a double infinity sign. Just up the coast, Victoria has an unexpected visitor. It's Aiden. He claims to have the same agenda as the queen. He says he's looking to destroy the girl next door.