Picking up after Quint and Dirk's Hero Quest, the Last Kids are happily reunited--but quickly faced with a monstrous new mission. Inside an other-dimensional fortress, the evil Thrull, alongside a vile new villain, is carrying out a sinister plan. Jack, Quint, June and Dirk must make their own plans to infiltrate the stronghold before Thrull gets any closer to completing the mysterious Tower, a structure that could ultimately spell doom for this dimension....

"Harvey Hill's first day at Strangeville Middle School doesn't go quite as expected when he discovers it's full of various creatures and odd happenings, including a particularly nefarious supply closet"--

"A descendant of Medusa, Ava is sent to the Accademia del Forte in Venice after an altercation with a classmate, where she must learn to control her emotions, especially when she unearths a terrible secret that could change the world forever"--