What we know ? Coop have some mysterious plan about going back and save Laura. Up to it is Mike, since he is cooperating with the Arm since FWWM, we can be sure the Arm is up to it. Is the Fireman with them ? We don't know for sure. A plan with Richard and Linda is something else. But Coop says something about "everything is as Garland said" and his  big head is at Fireman place. Ok so they are going to a secret passage to convenience store, located in hotel basement, really ?

How good can this plan be ? We have been seen, convenience store appeared after nuclear test. It is a place where are living Judy kids. Mike said in old TP, we lived above convenience store, yes with BOB. This BOB that really worried Fireman. He paused a film on him. In FWWM Bob have stollen corn from that place. That's why Mike/Arm was mad. We see Bob is healed by woodsman living there. At the end we see Phillip Jeffries with super special power to time travel 🙂 So, someone like Fireman can't sent Coop back ? Who is Phillip Jeffries ? From FWWM we can think he work for Judy. "Judy is pisitive about this" and someone else good pointed that he can be this monkey saying "Judy" to his master. At last he live in convenience store. There are living only bad guys. How can this all work out ? Coop is going back to save Laura with help of bad entity living in convenience store ? Even if Phillip is a traitor, theres a lot of other beings, that is their home. Why others would want to fight Judy ? C'mon a kettle have a power to time travel and Fireman don't ? Someone is still surprised why Laura has disappeared and the plan has failed ?