A possible concise summary is:
Rebecca confronts Alice, her ex-best friend who works for Mr. X, and asks her to take her to Agent R, who was kidnapped by Mr. X. Alice agrees and leads Rebecca and Maddie to a cave in a restricted area, where she reveals that she plans to take Rebecca's YouTube channel and erase her memory. Matt, Agent S and Daniel follow them using a tracking device and bonbons, and try to stop Alice before it's too late.
Some possible facts extracted from the text are:
1. Rebecca is trying to find and rescue agent R, who was taken by Mr. X.
2. Alice is Rebecca's ex-best friend and the daughter of Mr. X.
3. Alice has trapped Rebecca and her friends in various situations, such as an escape room, a loft, and an attic.
4. Alice is pretending to help Rebecca find agent R, but she is actually leading her to a trap in a cave.
5. Matt, agent S, and Daniel are following Rebecca's tracking device and a trail of bonbons to find her.
6. Alice wants to take over Rebecca's YouTube channel with Mr. X.
7. Rebecca and Alice make TikTok videos together, but Rebecca doesn't trust Alice.
8. Rebecca confronts Alice about her actions and motives, but Alice doesn't give clear answers.
9. Alice counts down from ten to activate a device that will make Rebecca forget everything.
10. Matt, agent S, and Daniel split up into three groups to stop Alice and save Rebecca.