From the moment we
step off the PLANE,
The Big Bang Theory Season 12, Episode 23
...was watching over the PLANE.
The Big Bang Theory Season 8, Episode 23
...by an inclined PLANE
wrapped helically around an axis?
The Big Bang Theory Season 4, Episode 5
Ever been on a PLANE
and find yourself
Breaking Bad Season 5, Episode 11
Query: On what PLANE of existence
is there even a semi-rational link...
The Big Bang Theory Season 1, Episode 1