Every sprint is a bit chaotic on day one. Anxiety runs high. You are, after all, pulling together a cross-functional team of strangers to solve a tough problem, and you're only giving them five days to do it. Most of the sprint team members will have never been through the process, some will think they can get away without doing the homework you assigned (hahahaha), others will dig in their heels about replacing the existing baseline solution because it's their baby.
Your "decider" may email and call you twice that day and once the next morning to ask variations of, "Are you sure this is going OK, Danielle? Because it's OK if it's not. Just tell me! I'll help you fix it."
Four days later, you'll all be friends and you'll have a fully functional, user-tested prototype of something completely new. But it's hard to imagine on day one.