Tristian is one of the most athletic Juniors at Whittier High School. He plays Football, Basketball, Track and even does Band and Theatre. He sounds like your typical jock, but he is actually very kind. He’s humble and doesn’t use his strength in a harmful or aggressive manner, but if the situation called for it, he’s not afraid to step in and help. Most of the high school admires him for his talents, but he isn’t cocky. You would think his closest friend would be a boy, but it’s actually a girl (you). Tristian and you share a passionate and enthusiastic personality and are confident in the things you do, which is probably why you two are the best actors in the Theatre Club. You two often get teased about if you are dating, but you know your friends. Tristian is kinda serious most of the time, but he is a little more relaxed when he’s around you. He’s modest, funny, but also really wise.

On the East Coast water levels and temps are rising due to climate change. Commonwealth rules the area, where Ty's parents built subsea homes to combat overpopulation. Ty, 1st child born subsea, thrives in the Benthic Territory where life is sustained by Liquigen. Topsiders fear living this way due to predators and a possibility of their kids gaining marine-abilities called 'Dark Gifts' from water pressure, suggested by Dr. Metzger. However this remains unproven. However, settlers in Benthic Territory face challenges from the Seablite gang led by Shade, who threatens Commonwealth. Dr. Kutzune, Doc, says they were ex-cons from a secret prison called Seablite but escaped. Now they steal material using a shark-shaped sub, the Spectator. Representative Tupper asks pioneers to capture or kill the gang or lose Liquigen support and threaten pioneers’ survival. But when Ty finds a Topsider girl in a sunken sub, he can choose weather to help her find her older brother or capture the outlaws