The glowing doorway was only the beginning! Now that Biff, Chip, and Kipper have crossed over, they find themselves deep inside the mysterious Time Vault. Waiting for them is Mr. Mortlock, the powerful Time Guardian, who reveals their massive new destiny. The evil Virans are actively working to destroy history, and only the children can stop them. To save the world, they must hunt down the scattered pieces of the ancient Time Web, a legendary time-travel machine hidden across different eras. It is a dangerous race to find the pieces before the enemy does! This gripping chapter book kicks the adventure into high gear, blending science fiction gadgets with heart-pounding quests through the vaults of time.