Joan and her four-year-old son happily spent the whole day at the zoo. But they don’t want to leave. Still, there are only a few minutes until closing, so mother and son hurry to the exit. However, on the way to the zoo gates, Joan hears strange sounds like gunshots—and then she sees people lying on the ground in unnatural positions. And she realizes: she and her son are trapped, like wild animals. In panic, Joan scoops up her son and runs deeper into the zoo, searching for a safe hiding place. At any cost, she must protect the child. What is she willing to do for it?