Professor Philip Brainard (Robin Williams), of Medfield College, is developing a new energy source in an attempt to raise enough money to save the university from closure. His concern for his research distracts him from his girlfriend and the president of the university, Sara Jean Reynolds (Marcia Gay Harden); He has missed two weddings in the past as a result of this, to Sara's wrath. On the day of the third wedding attempt, Philip approached his former partner Wilson Croft (Christopher McDonald), who has benefited from the ideas he has stolen from the chemist and now wants to rob Sarah of Philip and make her his wife. declares Philip directly, although Philip takes it as a joke. Before he can attend the wedding, his latest experiment shows a rapid development, forcing him to miss another wedding. The resulting substance created from the experiment is a living green goo that increases in speed as it bounces and turns out to be difficult to control, wreaking havoc on the neighborhood before the professor finally manages to capture it.
