As astronaut Lucy Cola returns from her first journey into space, she wrestles with an overwhelming sense of disconnection from her ordinary life on Earth. Although NASA insists she adhere to a therapeutic recovery plan and strongly suggests she take it easy, Lucy defies their advice by rigorously pushing herself both physically and mentally to accelerate her chance of returning to the cosmos. In this intense environment, she encounters Erin Eccles, a younger astronaut whose presence further ignites Lucy's feelings of restlessness and urgency.
Feeling suffocated by the relentless support of her husband, Drew Cola, Lucy seeks refuge among fellow astronauts who share her enthusiasm for space exploration. It is within this tight-knit community that she enters into a forbidden affair with Mark Goodwin, a veteran astronaut who inspires her dreams of the stars. As their romance blossoms, Lucy grows increasingly frustrated with her husband and the monotony of her everyday life.
Fueled by jealousy and the desire to surpass Erin, who recently set a record in space travel, Lucy becomes consumed during an underwater training session. In a shocking moment, she almost drowns yet remains eerily calm, experiencing a decrease in her heart rate amidst the chaos. However, her fleeting moment of triumph is shattered when she learns that Mark is entangled in an affair with Erin as well, leaving her feeling more alone and disillusioned than ever.
As her world begins to crumble, tragedy strikes when Lucy's beloved grandmother, Nana Holbrook, unexpectedly passes away, plunging her into profound grief. Her husband’s mounting worries regarding her unpredictable behavior only escalate tensions, culminating in a heart-wrenching breakdown during a bowling alley confrontation, where her emotional facade finally crumbles.
Simultaneously, NASA confronts Lucy regarding her near-drowning incident and her disregard for therapy sessions. The final blow occurs when she learns that she has been overlooked for an upcoming mission, igniting intense feelings of paranoia and bitterness. In a desperate act, Lucy hacks into Mark’s computer, unearthing damning emails detailing his ongoing affair with Erin, along with evidence that he’s been secretly advocating for Lucy’s disqualification from future missions.
This revelation propels Lucy into a spiral of further paranoia, uncovering the bitter truth that Erin has been selected to go on the mission. As her reality collapses, Lucy feels utterly defeated and disillusioned with the world around her. Her fragile mental state spirals out of control as she embarks on a chaotic journey of revenge against Mark and Erin. Joined by her niece, she plunges into a tumultuous odyssey across the country, haunted by the ethereal presence of her grandmother, leading to disturbed voicemails left for NASA.
In a precarious disguise, Lucy stalks Mark and Erin at the airport, her false appearance hiding the internal chaos she wrestles with. As she tracks Mark to his car, emotions boil over, culminating in a tearful confrontation interrupted by Erin's arrival. In a frenzied outburst, Lucy sprays Mark with insect repellent, sending him fleeing in terror. As the tumultuous events reach a fever pitch, Lucy completely loses her grip on reality and is eventually taken into custody by law enforcement after attempting to escape.
Fast forward three years later, the storm of her life has calmed, leading to a period of quiet reflection. At a school presentation, where her niece speaks while Lucy’s husband looks on, the woman who once lived in chaos has transformed into a peaceful beekeeper. With a sense of gentle satisfaction, she closes a hive and lifts her protective suit's hood, embracing a fleeting moment of tranquility amid the soothing buzz of her bees and the delicate dance of a butterfly fluttering nearby.
