A child named Norman goes missing after being upset with his friend D, a robot. D's friends search for Norman and eventually find him in a secret underground passageway. Meanwhile, the villainous Delictavius is trying to capture D and his friends, and is using a food truck as a front to brainwash people. Norman's mom is also revealed to be trapped in the underground tunnel system. The story ends with D's friends trying to rescue Norman's mom and D, while Delictavius is trying to stop them.
Here are the key facts extracted from the text:
1. Dolly's friend Norman has gone missing.
2. Norman is little and too young to be on his own.
3. Dolly's friend D has recovered faster than expected.
4. Dolly and her friends go to the school to look for Norman.
5. They use special tracking devices to locate Norman's signal.
6. The signal leads them to a secret passageway under a manhole.
7. Dolly's friends decide to go inside the passageway to look for Norman while Dolly stays behind to call for help.
8. Inside the passageway, they find a small room with a button that opens a door.
9. The door leads to a tunnel where they find Norman's purse and a trap.
10. They meet a character named Delictabius who is working for a boss.
11. Delictabius is told to retrieve the children and bring them to the boss.
12. The boss is revealed to be a villain who wants to capture the children.
13. Dolly and her friends try to escape, but the villain's robot, the Squidward, is after them.
14. They manage to outsmart the Squidward and continue their search for Norman.
15. They eventually find Norman, who had been following his mom.
16. Norman's mom is trapped in the tunnel, and Dolly and her friends try to rescue her.
17. The villain, Delictabius, tries to stop them, but they manage to outsmart him and escape.