[PART 1] As the wedding approaches, Owen's family and best mates fly over for a rehearsal dinner and a surprisingly well-attended bachelor party. Best man, Rick, inadvertently tells the Hansens what Syd intended to tell them herself: she has agreed to follow Owen to Chicago, where he can become a top law firm partner. Both funny lawyers guest star in Joanie's radio show. Robbie and Tina overspend on Christmas presents, while Pete teaches Hanna ice-hockey. Syd still works in hospital, where a Tony brings in his teenage boy who got shot by accident during a desperate hold-up in order to get the kid away from the mother's abusive boyfriend. He forbids even moving him to an OR, so Syd and David operate on the boy under poor conditions. Heather is delighted by a boy who found an adorable puppy. [PART 2] The press brings the hospital hostage story, so the wedding party gathers outside. The boy finally pulls through but needs long-term care; his dad faces facts, kisses him goodbye and ...