A call turns out to be Wyatt's old college roommate, Alice is pressured to make a decision by Daniel, and Sack's son spends time with him at work.

Wyatt and Sack deal with strange calls on a night with a full moon, and Wyatt is forced to deal with his father when he covers a shift in the ER.

Wyatt's attempts to teach Sack poker result in a bad bet, dense fog engulfs the city causing delays, Angela and Kroll's feud rises to a new level, and Wyatt goes behind Sack's back to get help for his son.

Wyatt's brother steps into the gap left by Wyatt and plans their father's 60th birthday celebration. Sack interviews at a private school for his son, and Angela and Harper have to make some hard decisions.

Wyatt deals with a new boss, while Ally deals with her boyfriend's daughter. Sack's son is accepted into private school.

Wyatt tries an appeal to his father when Lexi's condition worsens, Kroll goes Big Brother in the rigs, and Sack worries about meeting his son's tuition.

Things are still tense between Wyatt and Sack when they're called to a shooting, and a gang leader doesn't want the victim taken to the hospital. Alice's mother shows up unexpectedly, and Angela and Harper learn things about each other.

When a bomb destroys a health clinic, Cole comes in off-duty to help and encounters a pregnant victim.

Repercussions from the bombing rescues are unexpected, Angela may have returned to work too soon, and a trauma counselor speaks with the LifeShield employees.

Wyatt and Sack are held hostage by morphine addicts who hijack the ambulance. Angela becomes a dispatcher while her leg heals.

As depositions loom, Sack picks fights with Wyatt and explores other jobs. In the meantime, Angela has issues at home, and Harper ponders continuing his education.

The threat of sale becomes real for LifeShield, and everyone faces major decisions - both personally and professionally.