Time Lions and the Chrono-Loop

Twins Pearl and Patrick are geniuses, who’ve finally achieved their greatest triumph – time travel to ancient Egypt.
But when they return home, they’re arrested by TIME (The Interdimensional Misconduct Enquiry) a secret organisation charged with maintaining the timeline. Impressed, TIME offers the pair a chance to become agents. Unfortunately, they fail their entrance exam, and instead are banned from time travel. Pearl is infuriated and when she’s offered another chance from a rival organisation, she can’t resist, and unwittingly plays a hand in replacing the timeline they know with a nightmarish scenario.
Now Pearl and Patrick must fix their mistake. But the only way to save the future is to go back to the past for help…