Freddy aims to show his father that he's not "just a firefighter," but rather part of a noble and fulfilling cause–then picks the worst possible day to invite Frasier to the firehouse.

Frasier discovers that Freddy has been seeing Lilith behind his back, setting up a battle between the two exes for their grown son's affection.

While Frasier attempts to convince the university's provost to grant him full professor status, David faces a horrific, life-shattering crisis which will take all of Freddy's help to get him through: his first-ever B.