Penny and Luck's summer plans did not include finding a secret portal in their garden or being whisked away to a magical forest where bicycles fly and birds are as big as watermelons! But trouble is stirring, and a warrior princess needs their help to save her home from the evil Shadows…

As secrets are revealed, Penny soon discovers that there is more to this enchanting place than meets the eye. Can she use her inventing skills to help the princess AND get back home before time runs out?

Perfect for fans of the laugh-out-loud adventures, wild experiments, and daring rescues of Mo O'Hara's My Big Fat Zombie Goldfish series, combined with the humor, heart, and curiosity of Barbara Park's Junie B. Jones series, Claire Karwowski's debut is a whirlwind story of magic, bravery, ingenuous inventions, and a whole lot of BOOYAH.