Walter thinks and thinks, and thinks some more. That's when a giant hand reaches down and plucks him off the ground by his head. A chorus sings "The Happy Wanderer" as the hand transports Walter into an animated land reminiscent of Terry Gilliam's Monty Python work. Walter -- now animated himself -- drops down onto Gene's back and together they go traipsing off into a surreal landscape. They wander into a factory where pipes spit out a frog, a cairn terrier and a seahorse. The frog and seahorse may come from the glyphs, but where's the dog from? Oz? They pass by one last pipe and out pops the green fairy. This very motley crew comes to a tree being guarded by a knight. The frog devours the knight. Walter hesitates at the tree. A giant foot squashes Walter's traveling companions, leaving him free to access the tree, which he opens up with a key. He rummages around inside the trunk, which is full of babies for some reason, and pulls out a black umbrella.
Back in what passes for the real world, Walter suddenly says, "Black umbrella. That's the password." Only then does Richard finally lower the gun.
Now, a lot of online speculation has the knight as Bad Walter and the cow-riding one as Good Walter, but what if it's the other way around? Despite his rather forbidding countenance, the knight was wearing white, after all. It's then Bad Walter who gains access to this tree -- a Tree of Knowledge, so to speak -- where hidden memories are stored. He did remember "black umbrella" while imagining himself doing very Bad Walter things in the imaginary taxicab, and he seems rather glum when he recites the password, as if perhaps realizing he's now gaining more and more access to hidden parts of himself. On the other hand, the green fairy does appear and applaud Walter's accomplishment and his glumness seems to turn to pride, so maybe I'm the one hallucinating. Time will tell.
Everyone goes inside for a little chat. The team learns that Richard and his wife have been helping the Resistance since before it was even called that. "After a while, we acquired a reputation as people who could be trusted," he says. When Donald had to go on the run, he left the boy in their care. "He said he was part of an important plan to defeat the invaders." The last Richard heard, Donald had died. Caroline says they've been broadcasting the radio message every five days since Donald left. It's been over 20 years now. "He doesn't speak," Caroline says. "He hasn't aged a day since he came to live with us. We call him Michael." While his mother and father (for that is what they are, essentially) choke up with emotion, the boy just stares in silence at Olivia. When Richard says he wanted to keep Michael, Walter understands all too well. "I under doubted that Michael was important, that he was meant for something great," Richard says. Everyone looks sad. Someone at some point should probably wonder if this "plan to defeat the Observers" is also going to defeat this kid.