Malignant hyperthermia is a rare pharmacogenetic disorder that can be life threatening. It is triggered by all inhaled anesthetics and succinylcholine, with the pediatric population being the most common age group. Presentations vary, but most enter a hypermetabolic state with tachycardia, elevated end-expired carbon dioxide levels, and muscle rigidity. An 18-month-old male undergoing elective penoplasty and chordee repair with circumcision with no prior surgery developed malignant hyperthermia after exposure to sevoflurane. The patient was treated with Ryanodex (Dantrolene Sodium) and continued to be monitored. This case highlights a rare and potentially life-threatening disorder that should be considered prior to all surgical operations.