Wendy’s Sunday visit to her sister takes an unexpected turn when heavy snow begins falling. The family urge her to stay overnight, but Wendy insists on driving back. Her route leads her through an ancient forest perched on high ground, and the winding road is treacherous. As she ascends a steep incline, her headlights reveal a stranded car. Wendy’s compassionate instincts kick in, and she plods back down to help. But the woman inside is stubborn and refuses help.

Cold and annoyed, Wendy returns to her car and continues her journey. When she senses an unwelcome presence in the back seat, an acrid smell and fear claw at her chest. The stowaway is the boyfriend of the stranded woman. Aggressively, he forces Wendy to drive toward a water-filled quarry. He orders her not to watch, but curious she peers in the rearview mirror and witnesses a chilling scene. The man is struggling to shove a heavy bundle, wrapped in a blood-stained carpet, over the quarry’s edge.

The truth hits her like a sledgehammer: she is an unwitting accomplice to murder. In that frozen moment, she slams her foot down, reversing her car into the man, ramming him into the quarry alongside the corpse. Quickly turning the vehicle around, she flings herself out, watching it plunge into the icy water below. Using the snow-covered branches, she erases her footprints, leaving no trace of her involvement. Arriving home, Wendy invents an alibi for the police, that she’d stopped to aid a stranded motorist, only to have her car stolen. Her sister, worried and supportive, corroborates her story. Days later, the police discover Wendy’s car, and the truth emerges. The man who hijacked her car met his end in a dark, snowy quarry along with his faithful dog.

Her footsteps have vanished, but echoes of that fateful night reverberate in her heart.