In case you're unfamiliar with the series, it spans the course of decades and follows two childhood best friends, Kate (Sarah Chalke) and Tully. But by the end of season one, it appears that the two are not on good terms anymore. So much so that Kate insists she doesn't want to see Tully again.
Thankfully, per the show's official synopsis for season 2, fans will finally learn what caused that rift and gain a bit more insight into their backgrounds. It reads, "Kate grapples with the painful aftermath of Johnny's ill-fated trip to Iraq, while Tully faces a lawsuit after walking away from her talk show, and must start her career over from the bottom. This leads her to search for answers about who she is and where she comes from—including a quest to find the father she never met."
Netflix also released a few first-look photos from season two, including throwbacks of Kate and Tully during their teenage years.