Patients Zero (Dramione)

Everyone is born with a timer that counts down to a major life event but they aren't told what it is. One fateful day, Hermione Granger is walking home when she realizes her timer is low. Draco Malfoy is transferring a new potion him and his business partner made to be tested when he gets distracted by his own watch. What happens when they bump into each other after all this time?