Barney quits his job as detective because Opie wrote a nasty poem about how there are no crimes for Barney to solve. While Andy tries to reassure him that he is an important member of the team, Opie explains what happened.
Webber and Bailey interview potential interns, and the applicants illustrate all the things you shouldn't do in a job interview. Stereotypical millenial tendencies are exaggerated to emphasize the poor habits of interviewees.
Monica interviews at several law firms, and each interviewer makes assumptions about her background. Monica takes undercover footage of her interviews and sends it to her interviewers when she does not make it past any interview rounds. The videos show evidence of racial discrimination.