Yadina is determined to make her way around the whole playground structure, but she keeps getting stuck at one spot: the monkey bars. They're really high up and she's too scared to go across! What should she do?? To the Secret Museum! Our heroes are sent back in time to meet someone who refused to let tough challenges scare her off: Nellie Bly. Our trio goes along with Nellie as she boldly sleds down a steep snowy hill, and then amazes millions as she boldly partakes in a race around the world! Watching Nellie helps Yadina work up the courage to face down those monkey bars because when you really want to do something, you should be bold.