When the members of the Mobile Unit get zapped into sandwiches by the villain, Shelly Catessan, The Big O comes to the rescue. As she combs through video footage taken by Omar to celebrate their 100th case, The Big O must use clues she sees in the videos to figure out the order in which the agents were zapped so she can return them to their agent form. Curriculum: Time - Order of Events The Mobile Unit faces a series of challenges that Orla knew was coming from overhearing a sorcerer's conversation 450 years ago. Through flashbacks, Orla shows the rest of the team the times she prepared each of them-unbeknownst to them-for the upcoming challenges. Curriculum: Calendar