Susan Traylor plays Lizzy, an attractive American tourist in Mexico on her way to a hotel. After her cab gets into an accident midway to her destination, she abandons her nonplussed driver, grabs her shoulder bag, and starts walking in the midday heat, seemingly stunned. Maybe she's received a slight concussion or maybe . . .
Many sunstruck hours later, Lizzy arrives at the hotel and falls instantly asleep even before the manager who shows her to her room can leave.