Whether you’re a veteran parent, expecting your first or vaguely familiar with the tiny humans known as babies, we can all agree that they’re pretty fascinating. It’s kind of crazy to think about how much an infant’s body and mind transform in those first 12 months—sitting, eating, crawling, eventually talking and walking. The new Babies Netflix documentary breaks down that first year of development, and we’re predicting it’ll be the show everyone’s going to be talking about on Monday, whether you have kids or not. Here, everything you need to know before the docuseries arrives on the streaming platform.