Washed-up archaeologist Rip Digman, trying to dig out of obscurity and redeem himself, recruits a sidekick to help him find the lost hat of Hammurabi, an ancient king of Babylon.
Rip takes a job in Italy to seek an original confetti that sends him after the dagger used to assassinate Julius Caesar.
Rip finds and then accidentally destroys the Ten Commandments, leading him on a treacherous search for God's backup set of commandments as the world descends into mass chaos.
Rip attends the Arky Gala at the Metropolitan Museum of Art, Saltine bonds with a rival assistant, and a group of gamers protest plans to demolish Zapper's Arcade to build a new museum wing.
The gang is hired to find Amelia Earhart's plane, Swooper becomes captain of a floating utopia in the sky, Agatha hooks up with a new friend, and Rip and Saltine lead a revolution.
Rip goes on an undercover mission to find a long-lost sonnet from Shakespeare's legendary oeuvre, but things get sticky when he crosses paths with a charming thespian.
Rip journeys to the distant Puffland in pursuit of the Holy Grail to resurrect his late wife Bella, but his solo mission goes awry when the king arranges for Rip to marry his daughter.
Rip infiltrates Quail's museum opening to steal the Holy Grail and bring Bella back to life, and Saltine goes on a risky mission to find out the truth about the coveted artifact.
Rip and Saltine take the Antichrist on a worldwide journey through Rip and Bella's past in an attempt to exorcize the demon from Bella's body; Quail joins a shadowy organisation of museum owners, but it is unclear what they want.
When Rip and Saltine uncover a global conspiracy, the Titanic Museum will stop at nothing to prevent the truth from getting out; Rip must turn to the late-night talk show host Chortles Collins.
Rip makes a foolish bet with his rival Jasper Jenkins; Rip and Saltine must search for a long-lost artifact, the Sari of an Untold Hue.
Rip goes on "The Eligible Arky," a popular dating show where a single archaeologist looks for love; will Parisha or Ximena win his heart?
Rip teams up with the world-famous psychiatrist Dr. Sandra Null to hunt down Freud's Couch, which has taken on a monstrous life of its own. What WAS Dr. Freud up to in his laboratory all those years ago??
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.
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.
