Megs and Prime end up meeting their pasts selves, and it ends up in a sort-of babysitting thing, since of course, their pasts selves were before and after the war started, and it was just the beginning of it. And there's going to be a hella ton of "wtf"s and amazed moments from Orion and Megatronus (past Optimus and past Megatron) too, so it's going to be a bit of a hard time.