A team of emergency response providers put their lives at risk to save those who are at their most vulnerable.

A roller-coaster malfunction at an amusement park leaves lives hanging in the balance; Athena and Hen respond to an unusual home invasion.

An emergency at a children's birthday party calls for backup; one of the crew is involved in a devastating accident.

Bobby and team race to help the survivors of a plane crash; Athena is faced with panic and chaos at the airport.

On Valentine's Day, a unexpected marriage proposal goes wrong in the worst way; Athena tries to help a desperate woman; Bobby and Chimney go on holiday duty.