影片根据英国童书作家Georgia Byng的作品改编，主人公莫莉梦妮是一个孤儿小女孩，偶然发现了一本催眠书，她学会了催眠他人，在后来的一系列书籍中，莫莉还掌握了其他能力，包括停止时间、时间旅行、阅读他人思想和变形。利用催眠术莫莉在一场纽约比赛中名声大噪，变成出名和富有。然而，另一伙人也盯上了那本催眠书，他们找我莫莉，胁迫她参与一起抢劫纽约最著名珠宝店的计划。

The story of a young orphan girl, Molly Moon, who comes across a book: ‘Hypnotism, An Ancient Art.’ Learning its lessons, she hypnotizes her way to stardom in London and becomes rich and famous. But little does she know that an unscrupulous man wants her book. He tracks her to London, kidnaps her dog, Petula, and blackmails Molly. In order to get her dog back, she must rob Shorings Bank of all its jewels! And then she must find the friends she has lost from her hypnotic journey.