The Hawaiian Islands are one of the most geographically isolated places on earth, over 2,400 miles and nearly 4,000 km to the closest landmass, which is California, USA. Born of a volcanic hotspot rising from the sea floor of the Pacific Ocean, the Hawaiian archipelago formed nearly 75 million years ago, with the eldest islands of the chain long since eroded and submerged beneath the sea’s surface to the northwest and the youngest of the islands still forming beneath the sea’s surface to the south east.
Mac investigates a mass arrival of Travelers, while also trying to repair his marriage with Kat. Philip is given assistance with his addiction from fellow Traveler 4514, Jenny. Marcy treats David for PTSD, but is dealing with feelings of detachment and disassociation herself. Carly and Jeff try and clean up their act for Child Protective Services and regain custody of their son. Trevor and Grace bond in the hospital while recovering from their injuries.