Professor Krupnick of Sheldrake Academy goes missing after "The Hacker" and his agents infect his computer program.

The Adventurers arrive in Misenum and meet a boy named Gaius; the group is arrested by two centurions who bring them to a gladiatorial arena in Pompeii.

The Adventurers travel to 1775, arriving on the night of Paul Revere's heroic ride; the Agents poison his drink, making him too sick to make the journey himself.

The Adventurers arrive in 1601, where they meet Queen Elizabeth, William Shakespeare and the power hungry Lord Essex; Lord Essex plans a conspiracy against the Queen with the help of two Agents.

The Hacker's evil Agents try to prevent Magellan from discovering the passage to the Pacific Ocean in 1520 by triggering a mutiny.

The Agents kidnap Leonardo da Vinci in an attempt to prevent him from painting his famous Mona Lisa; The Adventurers try to get Signora del Giocondo to smile.