A babysitter receives mysterious calls warning her to check on the children, only to discover an intruder is already inside the house, trapping her in a desperate fight for survival.
0–1s: She sits on a couch in a large suburban living room at night, phone in hand, warm lamp against dark windows.
1–1.8s: Phone lights up with an unknown/no-caller-ID number. She mutters, "Weird, no caller ID," and answers.
1.8–2.8s: "Hello? Who's this?" Distorted voice: "Have you checked on the kids?"
2.8–3.6s: "Is this a joke?" Silence, then disconnect.
3.6–4.6s: She rises: "Just gonna check real quick," staring toward the dark staircase.
4.6–5.8s: Static wide hallway shot; dim nightlight. She enters with phone flashlight.
5.8–6.8s: She opens the children's bedroom; two children sleep peacefully.
6.8–7.6s: Relieved: "Okay, good, you're fine." Gently closes door.
7.6–8.6s: Phone rings again. "Seriously? Not now."
8.6–9.6s: Same unknown number. "This isn't funny anymore. Who is this?"
9.6–10.6s: Voice: "Have you checked on the kids?" Her irritation turns to unease.
10.6–11.6s: "I just checked, they're fine," gripping phone tighter.
11.6–12.6s: Voice: "Check again. And look behind you." She freezes and slowly turns.
12.6–13.4s: Empty hallway. "There's nothing there."
13.4–14.4s: Voice: "I'm not talking about the hallway. I'm already inside." Call dies.
14.4–15.4s: Close-up: realization and terror on her face, phone trembling.
15.4–16.2s: "Okay, call 911," fumbling to dial.
16.2–17s: Phone: "No Signal." Panic.
17–17.8s: Floorboard creaks from a slightly open closet at hallway's end. She freezes.
17.8–18.6s: She backs toward the children's room: "Please, please…"
18.6–19.4s: Closet door slowly creaks farther open. Static wide shot; darkness inside.
19.4–20.2s: A violent shadowy figure suddenly lunges from the closet.
20.2–21s: She screams, "Oh my God!" and rushes into the children's room, slamming the door.
21–21.8s: Back against door, panting: "Stay quiet, stay down, okay?"
21.8–22.8s: Door handle violently rattles; she holds it shut with both hands.
22.8–24s: Children sit up terrified. "It's gonna be okay, I promise."
24–25.2s: Door strains against hinges, wood splintering as pounding intensifies.
25.2–26.4s: She looks toward the window: "Come on, come on…"
26.4–28s: Pounding abruptly stops. Absolute silence.
28–30s: Hold on her terrified face pressed against the door. She whispers, "…Hello?" End on unresolved dread.