Baby Jane was a child star. When she grows up she is forgotten by the public. Instead her sister Blanche gets famous as a Hollywood actress. Blanche gets physically handicapped after a mysterious car accident. She lives in a room and Jane has to take care of Blanche. But Jane hates Blanche.
As the movie begins, a young Baby Jane is performing on a Vaudeville
stage. Another act shown briefly is a juggling team, seen passing 6
clubs for a few seconds.