After the guys treat a man (Wayne Knight) with a deep fear of hospitals, Brian confronts his own fear of moving out. Meanwhile, Johnny has a fear realized when Billy temporarily moves in with him and Theresa.

After Johnny sees how much respect Theresa gets on the job, he gets the guys to revive an old program in order to get a little respect for EMTs.

When Johnny's dad goes into a coma, Johnny's mom deals with her grief by placing bets on the time of her ex-husband's death and Johnny handles his own grief by trying to pay off an old debt. Meanwhile the guys can't get an unfortunate song out of their heads.

Things get mixed up when Johnny, Theresa, Billy, and Maeve start playing tennis together. Later, Cash helps Hank shop for his mom's birthday, while Brian subs in for him riding along with Voodoo and Stats.

A drunken brawl between Cubs and Sox fans reverberates at a family barbecue where petty disputes play out over a new gas grill and a big punch bowl full of Hurricanes.

The guys save a mobster; Brian wants to make changes to the rig; Hank wonders who may been the worst person he's helped; and Hank looks for his old neighborhood pony.

The guys confront chaos when a car crash at a firehouse releases an unusual passenger. Meanwhile, Billy deals with a different sort of chaos when he accompanies Theresa and Maeve to a sample sale.

Johnny has to deal with his prejudice against "rich white guys" when Hank starts dating Johnny's wealthy landlord. Meanwhile, Billy helps Brian work through his heartbreak after Voodoo starts seeing a guy she met on an asexual message board.

Johnny and Hank's worst nightmares are realized when they are forced to ride along on Brian's first nightshift.

After the guys treat an overly ambitious gym rat, Johnny and Hank are pumped when they get free passes at a health club loaded with attractive people. Meanwhile, Voodoo tests the limits of Brian's ability to remain in a sexless relationship.

The guys explore ideas of fate and serendipity after several random but fortuitous events, and Johnny gets bent out of shape when he discovers that Theresa doesn't think it was "destiny" that they met.

The murky relationship between the caregiver and the cared-for is exposed when Johnny encounters an overly grateful patient and Brian agrees to escort an injured young woman to her prom.

When the guys save a landlord with a nut allergy, Johnny finds the perfect apartment to share with Theresa, and his relationship with her enters a new "territory." Meanwhile, Brian tries to understand the terms of his platonic love affair with Voodoo, Billy starts dating Theresa's sister, and Hank has to wonder if he's looking for love in the right places.