Digman!

Rip attempts to repair Saltine's relationship with her parents, but inadvertently leads them into a massive treasure hunt; will they find Blackbeard's gold before Zane does or will the only thing they dig up be some dark secret?

Saltine continues her Arky training under the tutelage of the powerful, mysterious, and adorable Yorbo. Meanwhile, Magnus tasks Rip and Swooper with finding a rare chess piece that is allowed to move anywhere on the board.

When Arkies begin disappearing, it's up to Rip and Saltine to find out who's responsible, even if it may bring about the end of history. Could it somehow involve Vindita? And what connection do she and Rip share?