This B-plot is surprisingly heavy. Mary, the religious zealot of the family, is forced to confront the idea that her faith might not be hereditary. Missy’s cynical wit shines here, proving once again that while Sheldon has the brains, Missy has the emotional intelligence—and she uses it to dismantle her mother's arguments with surgical precision. Spoiler alert (but not really, because you need to watch it).

Here is why you need to hit play on S04E03 right now. The episode pivots on two classic Cooper family dynamics: Sheldon vs. The World and Missy vs. Authority .

Have you streamed this episode yet? Who had the better storyline—Sheldon with the bike or Missy with the unholy bet? Let us know in the comments!