失控出轨的列车，让雪梨这个国际都市陷入混乱，这只是第一步。生化武器袭击导致坠机的幸存者在数分钟内暴毙，而且以气体传播的攻击正在迅速蔓延…...

After the parties, jobs, and hook-ups well into their thirties, eight friends are trying to hold on to their group as they learn that while growing up is hard, staying close is harder....