Giveaways Win a Captain Underpants: The First Epic Movie Book Prize PackBy Bianca Schulze3 Mins Read Celebrate the movie release by entering to win a Captain Underpants book prize pack! Giveaway begins May 15, 2017, at 12:01 A.M. PST and ends June 15, 2017, at 11:59 P.M. PST.