It’s been four months and Athena wants to keep still secret her relationship with Bobby, even though he wants to take her out to a real date. A new firefighter arrives at the firehouse Eddie Diaz, who graduated top of his class
this week and makes Buck feel threaten by him for his chances to take part in the annual fireman calendar. Chimney also wants to be in the calendar, while Buck’s big sister Maddie has come to visit him after three years, but the
real reason is that she is avoiding her abusive husband. Buck, in order to help her, proposes to take a job as a 911 dispatcher, while a big earthquake hits Los Angeles.