Bull and his team are heading to Callisto to defend a young woman against a drug patent lawsuit, but it is the only place Bull hasn't won a case.
Freddie asks Nozzoli to kill Michael, Tommy makes a bid for the Speaker's chair, Colin and Rose grow closer and Eileen puts her foot down.
Rose sows unrest between her sons, Freddie asks Declan to negotiate with the competition and Tommy and Dana see more of each other.
Michael and Kath prepare for an addition to the family; Tommy tries to clean up a bad neighbourhood; Eileen gains perspective; Rose struggles with ageing.
Tommy's political enemies try to block his re-election, Michael's day takes a disturbing turn and Colin escorts Kath to a clinic.