- Leonard gets a call from someone who bullied him in high school.
- The bully wants Leonard to help him with a project, since he is the only scientist he knows.
- The bully gets drunk and apologizes to Leonard, only to wake up sober and retract the apology and bully Leonard again.
- Amy and Bernadette uncover that Penny was a bully.
- Penny attempts to apologize to her victims, but is unsuccessful.
- She decides to do something charitable instead.
- She donates clothes to charity, only to find other donated clothes she wants.
- She decides it is wrong to take the donated clothes.