Meredith asks Heather to help fix Derek's hand; Cristina sets Stephanie and Leah against each other in a competition; Alex starts to see Jo differently; Shane learns a valuable lesson from April.
On a trip to the zoo, the family bump into one of Lois's old boyfriends, who lectures on rain-forest wildlife. Malcolm and Dewey get trapped in a tiger pen, and Reese goes head-to-head with a goat.
As Boyd and Ava attend a sex party to look for a missing drug pilot, a fugitive murderer draws Raylan into a showdown.
As Boyd uses the Detroit mob's contract on Drew Thompson to target his own enemies, Raylan's search for the missing drug courier leads him to question Harlan's imprisoned former sheriff.
Frasier plays Cupid when he arranges a supposedly accidental meeting between Martin and Roz's mother, but he finds out that Martin can't stand her just minutes before she's the surprise guest at the Cranes' Superbowl Party.