Set in 1997, a group of 27 students attends a weight-loss farm where only 6 fail to shed 15 pounds in 7 weeks. The instructor, Richardson, resembling the famous Richard Simmons, is furious and goes out of business. Six years later, Richardson starts killing his former failing students, prompting Jack, a New York detective and one of the failures, to investigate.

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As Jack identifies the victims, he realizes they were all part of his old weight-loss class. His investigation intensifies when he discovers his love interest is the next target. Driven by love and determination, Jack saves his beloved and captures Richardson, conquering his fear of heights in the process.

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In this suspenseful tale of revenge and redemption, Jack's detective skills and personal growth culminate in a thrilling climax atop a high-rise building. "A Weighty Revenge" unfolds as a gripping journey from failure to triumph, with a detective on a mission to save not only himself but also those he cares about.