At the end of the first season, Danny finds out that Rachel is pregnant with their child and is leaving with Grace to go back to New Jersey; Danny wants to come with them but is conflicted when McGarrett is in danger. As Season 2 begins, McGarrett is in jail awaiting trial and Danny comes to visit him with a special guest. Danny finds out that Rachel's intentions may be different than he was hoping for. The task force gets a new team member whose job is to keep them in line. Chin Ho worries about Kono's safety and a new case targets the task force members and threatens their safety.