When the body of an old man is found in an acid dump site, the team becomes enmeshed in retirement home drama. As they explore the case, talk of marriage and kids begins to dominate the conversation back at the lab.

When a young man dies in a horrendous hay baler accident, Booth, Brennan and Aubrey slap on trashy disguises and go undercover at a rowdy demolition derby competition to investigate the case. Meanwhile, Dr. Gordon Wyatt returns and assists Hodgins and Cam when the ongoing Gormogon case hits a dead end.