Life in a Day, originally titled Antidote, is a 1999 film about a baby rapidly aging due to a failed cell-accelerating experiment.
Dr. Peter Hamilton works for Concord University under Dr. Leo Sardis and Dr. Carla Jennings, and has developed a serum called AccelRate.
A murder investigation, led by Chief Max Reed and Detective Ed Carlisle is soon launched, Mark becoming the primary suspect.
Mark reveals that Leo ordered him to conduct the experiment resulting in Tina's death, having promised that he would be set for life.
Back at the lab, Peter injects Jasmine with an experimental governing agent, earlier tested on one of his rabbits; their feelings for each other deepen.
Peter and Jasmine return to see Charlie being taken into custody, and enter the lab through a back entrance to avoid police attention.
As Peter unsuccessfully attempts to open a cabinet containing a governing agent, Leo enters, alerted by a security alarm.
The final scene shows Peter leaving the campus, holding a jasmine branch in memory of the woman he loved.