TLDR;
Two sisters, Bri and Janna, find themselves trapped under a pool cover after hours, leading to a desperate fight for survival. They face challenges including a diabetic emergency, blackmail by a desperate cleaner named Clara, and the threat of chlorine gas. Janna ultimately saves them by breaking the cover, but they are confronted by Clara with a gun before Janna convinces her to stand down by appealing to her love for her daughter.
- Sisters trapped under automatic pool cover.
- Diabetic emergency and blackmail situation.
- Janna saves the day by breaking the cover.
- Final confrontation with blackmailer.
The Accident [0:00]
Bri and Janna are swimming when Bri's diamond ring falls into the pool. As they dive to retrieve it, Janna's hair gets caught in the filter. Bri helps her, unaware that the pool manager, McGrady, assumes everyone has left and activates the automatic pool cover. The massive cover begins to slide shut, trapping the sisters underwater.
Trapped [0:27]
The sisters scream for help, but the building is empty. They try to push the cover open without success. They spot a small hole but can't widen it. Janna blames Bri for the situation, but Bri retrieves the ring and notices a loose drainage grate. She tries to move it, hoping to use it to break the cover, but it won't budge.
Desperation and a Glimmer of Hope [0:45]
Bri's fiancé, David, calls, raising their hopes, but he never arrives. The pool lights go out, plunging them into darkness. Bri, who is diabetic, needs insulin, which is in her bag outside the pool. Janna, seeing Bri's suffering, starts working on widening the hole again.
Blackmail [0:01]
After four hours, the pool lights turn back on, revealing Clara, the night shift cleaner. The sisters scream for help, but Clara ignores them and steals from Bri's wallet. Clara, recently released from jail, reveals her plan to extort money from them, demanding the PIN to Bri's bank card.
Betrayal and Cold [0:01]
The sisters realize they are being blackmailed. Janna curses Clara, who retaliates by turning off the pool's heating system, making the water freezing. Bri gives Clara her PIN, but Clara wants to verify it before freeing them.
Chlorine Gas [0:02]
Clara returns, angry that the account only had $80. Janna explains Bri's need for insulin, but Clara doesn't believe her. Janna tricks Clara into coming closer to the hole and injures her. Enraged, Clara activates the pool's cleaning system, releasing chlorine gas into the pool.
Desperate Measures [0:02]
The chlorine gas disorients the sisters, and Bri sinks underwater. Janna pulls her back to the hole for air. Clara, not wanting anyone to die, stops the cleaning system and demands Bri's diamond ring, which Bri reluctantly hands over.
No Way Out [0:02]
Clara tries to open the pool cover but discovers that McGrady has changed the password. Panicked, she abandons the sisters, fearing the consequences of her blackmail. Bri passes out from lack of insulin.
The Final Push [0:03]
Janna, despite her fear of being underwater, dives and manages to dislodge the metal grate. She uses it to smash the pool cover until it breaks open. She drags Bri out and injects her with insulin, and Bri regains consciousness.
Confrontation [0:03]
Clara returns with a gun, intending to eliminate the sisters to prevent them from reporting her. Janna hugs Bri and pleads with Clara, promising they won't tell anyone. Clara doesn't believe her.
Clara's Weakness [0:03]
Janna reminds Clara about her daughter, appealing to her maternal instincts. Clara lowers her gun and returns Bree's ring. Janna calls 911 and allows Clara to leave. The sisters are finally safe.
