NCIS and NCIS; Hawai’i are colliding for a crossover episode for both of the shows’ upcoming series premieres. It will be the season 20 premiere for the former and the season 2 premiere for the latter.

The episodes will air Sept. 19 and chronicle “the hunt for a dangerous suspect [that] unveils a complex network and a larger sinister plan that will take the D.C. team to Hawai’i in a race to thwart the next large-scale attack.”

The 'NCIS' logline:

Following the cliffhanger season 19 finale, with Special Agent Alden Parker (Gary Cole) still on the run with his ex-wife Vivian (Terri Polo), the team investigates who from his past might have a personal vendetta against him in hopes of clearing Parker’s name. Enlisting the help of NCIS: Hawai’i’s Special Agent Jane Tennant (Vanessa Lachey) and computer specialist Ernie Malick (Jason Antoon), who are in town meeting with director Leon Vance (Rocky Carroll) in preparation for a global military exercise, the group tracks down their prime suspect, The Raven.

The 'NCIS: Hawaii' logline:

Tennant’s team, along with NCIS agents Nick Torres (Wilmer Valderrama) and Jessica Knight (Katrina Law), track The Raven’s whereabouts to the island of Oahu and learn about his plans to attack RIMPAC (The Rim of the Pacific Exercises), the world’s largest international maritime warfare exercise, on the exciting conclusion to the special crossover event and the season two premiere.

NCIS will air at 9 p.m. followed by NCIS: Hawaii at 10:00 p.m.