When Bertie's teacher announces a public speaking assignment, Bertie is paired up with her worst enemy for the project and her inside voice won't stop telling her that everything is going to go wrong. And of course, there's that nagging little secret Bertie can't tell anyone about. As life grows more complicated, and Bertie pushes the noisy feelings further down, the pressure inside of her starts to build. And someday soon, she won't be able to hold it all in.