Denny Crane's long-lost son (Freddie Prinze Jr.) resurfaces as the lawyer representing environmental interests against a shopping mall development planned by one of the firm's biggest clients.
Grissom and his team investigate the death of a first class passenger on a flight to Las Vegas.
Alan again defends Denny, who has been arrested for illegally shipping human fat out of the country; Clarence tries his first case, a homicide, with Bethany and Paul's help; a member of the firm bids farewell.
Nate muses on the loss of his first love; Claire finds a temporary financial solution while waiting for a grant; Brenda takes a break for some fun.
Keith tries to protect David; Billy attends to his sister; Claire pushes Ted away; George tries to help Ruth with Maya.