The members of the Baby-sitters Club are used to handling tantrums, messy diapers, and strict parents, but their latest challenge is genuinely spooky. While out on their babysitting jobs, Kristy, Claudia, Mary Anne, and Stacey keep receiving mysterious phone calls. Every time they answer, there is only an eerie silence on the other end of the line. With news spreading about the Phantom Caller, a notorious local jewel thief operating in their neighborhood, the girls are on high alert. Claudia loves a good mystery novel, but living through one is entirely different. Determined to protect the children in their care and uncover the truth, the club decides to take matters into their own hands. They devise a plan to catch the culprit, leading to a series of thrilling and hilarious mix-ups. Join the club for a suspenseful adventure that tests their bravery and teamwork.