Unexpected Task

This noon, my friend called me via YM and he told me that i had to leave to Ungaran tomorrow to help him and my friends there, because my campus is going to hold a workshop there for high school students. It was very unexpected task, since i'm planning to have a reunion party with my friends tomorrow night. Gladly i don't have to stay, so it's one day trip, so i still have a chance to go to the party (but i'll be late, that's for sure). The workshop is scheduled to be two days, but i don't know if i can go at Thursday again or not. We'll see about it tomorrow. Well, i should start prepare myself for tomorrow's event.