Dr. Java and Mr. Hyde / Miss Dewey's Dismal System

A) Dr. Java's coffee is causing strange reactions on people and even animals. Meanwhile Mr. Hyde remembers his brother and wish they could work together again. B) The new librarian, Mrs. Dewey, is a real ogre, literally, and is giving Mona a really hard time.

海德先生在镇上开了家冰激凌咖啡店，结果被对手爪哇博士大受欢迎的店搞得快关门了。莫娜发现爪哇博士发明了一种机器，帮助他接管咖啡零售的世界。他的咖啡非常邪恶，喝咖啡的人都变成怪物。莫娜必须毁灭这个咖啡机。 一名严格的图书馆管理员杜威小姐要求莫娜归还最近她借的书，莫娜没钱付罚款，而读书报告的内容也消失了。可是作为家庭作业，她还是要完成。莫娜和小伙伴们下课后潜入图书馆，他们又有了新的发现。