Leopold awakens on a Wednesday morning in the year 2001 in Stuart's apartment at 88 White Street, Manhattan. Stuart explains that the portal they have travelled through has closed, but will reopen on the next Monday, until which time Leopold should stay in Stuart's apartment. As Stuart takes his dog out, he is injured by falling into the empty elevator shaft, and, after ranting about his scientific discovery in the hospital, is involuntarily committed to a mental institution. According to Stuart's concept, Leopold's unintentional time travel to the 21st century has caused a widespread "occlusion" of elevators, and may cause the disappearance of Stuart himself if Leopold doesn't go back on Monday.