Sometime after the storm, Hannah regains consciousness floating in open water, a rope tied around her waist connecting her to the capsized Be-Yacht-Ch. She hauls herself onto the overturned hull and notices that the keel is entirely absent, leaving only rusted supports—the same structure Ben had previously described as helping keep the boat upright. Initially numb and disoriented, she assesses her injuries: cuts, bruises, severe sunburn, and a large patch of scalp torn free near her hairline. As her awareness returns, the memories of the storm rush back, and she vomits over the side of the hull.

Convinced that everyone else is dead, she screams for the others and crawls along the lifelines searching. The ocean answers with silence, and for a moment, she wishes she hadn’t been wearing a life vest. Eventually, she hears a rhythmic knocking from inside the submerged hull. She traces the sound from porthole to porthole, and at the last one, she peers inside—where a blinking eye stares back at her.

The eye belongs to Emmy, alive but trapped in a small air pocket inside the tilted cabin. Hannah dives through the submerged hatch, navigates the flooded interior, and surfaces in Emmy’s air pocket. Emmy faintly says that she knew Hannah would come. Before reaching her, Hannah fears that she may find Jackson’s body inside the submerged boat. When Emmy asks about Jackson, Hannah avoids the question, overwhelmed by grief over his likely death.

Emmy has a deep, infected gash running the full length of her forearm, which appears to be infected, and the boat is groaning ominously. Hannah notices their mesh bag of food strapped across Emmy’s body—kept safe through the entire ordeal. Fearing that the damaged boat could sink at any moment, she ties the rope to Emmy, swims back out, secures the food bag on the hull, and pulls Emmy through the hatch to the surface.

The food bag holds four cans and two sealed water bottles; Hannah limits herself to one small sip before storing the supplies. Emmy has a high fever and is becoming delirious. Despairing, Hannah puts her life vest on Emmy. Moments later, she spots a figure in the water roughly 300 feet away, waving from an emergency flotation ring. It’s Jackson.

Hannah swims to Jackson, and they cling to the flotation ring together. He explains that after the first wave hit, he found Hannah bleeding and unresponsive on deck, tied her to a metal support, and was swept overboard by a second wave along with the flotation ring. Overwhelmed with relief, Hannah kisses him. They swim back to the boat, where Jackson refuses water so that Emmy can have it.

With the Be-Yacht-Ch visibly sinking, they assess the situation: Emmy’s infected wound and fever are the most pressing problem, and a faint line of green on the horizon means land is within reach. Hannah and Jackson decide to retrieve the emergency raft and first-aid kit from inside the boat while they continue drifting toward the land on the horizon.

Hannah dives into the submerged cabin, finds a dive mask, and locates both items, but the raft bag is too heavy to drag out alone. She surfaces to call for Jackson, but he’s gone, and the rope has gone slack. She struggles on her own, eventually hauling both items onto the hull. When she turns around, she finds Jackson crouched over Emmy, who’s convulsing in a seizure.

Hannah rolls Emmy onto her side to clear her airway and times the seizure at just under two and a half minutes—short of the five-minute threshold she considers dangerous. She tells Jackson that the cause could be fever, a head injury, or low blood sugar and that further seizures are likely without treatment.

The first-aid kit proves nearly useless, containing only calamine lotion, small bandages, a sting-relief packet, and a single dose of Tylenol. Hannah gives Emmy the Tylenol and concludes that they must reach shore as quickly as possible.

Following the printed instructions, Hannah inflates the emergency raft; its canopy pops up automatically, giving them their first shade in hours. The shoreline appears to be two to three miles away. They get Emmy settled inside, leave the sinking Be-Yacht-Ch behind, and Hannah and Jackson enter the water to push the raft toward land, kicking steadily to conserve energy. After what feels like hours, the coastline comes into clear focus. Then, Hannah feels a spreading sting across her skin and discovers welts forming rapidly on her arms and legs. Looking down, she spots translucent jellyfish surrounding them.

Hannah and Jackson push through the jellyfish until the stinging fades. Waves near shore do the final work, pushing the raft onto a sandy beach just as the sun sets. Exhausted, Hannah collapses in the sand while Emmy remains in the raft, muttering incoherently.

Hannah walks the jungle’s edge looking for fresh water and eats unripe mangoes before finding a clear, shallow stream. She rinses her wounds, drinks, refills her water bottle, and recognizes the cool water as a way to bring Emmy’s fever down. She hurries back to find Jackson gone.

Hannah carries Emmy to the stream and uses the cool water to gradually lower her fever. Jackson returns, having walked the beach looking for help and finding nothing. He tells Hannah that her priority is to keep Emmy alive until help arrives, prompting Hannah to focus on making them easier to find.

They keep Emmy in the stream for about an hour. Hannah gets her to eat the syrup and fruit from a can of peaches, and Emmy becomes alert enough to walk part of the way back on her own. Hannah covers the infected wound with a large leaf and gets Emmy settled in the raft to rest. She then announces that she will build a fire before sleeping, asks Jackson to stay with Emmy, and sets off alone to gather driftwood.