Four friends are heading outside for a full day of fun! While Alex and Charlie make sure to put on sunscreen and protective clothing, Sam and Nate decide they don't need to worry about it because it's a cloudy day. But the next morning, Sam and Nate wake up to red, painful sunburns. How did this happen? The sun wasn't even out! Alex and Charlie help the boys understand how ultraviolet light can cause sunburns, and how to be smart about sun protection so they can continue to spend lots of time outside as healthy and active kids.