The series follows a group of teens : Clarke Griffin -LRB- Eliza Taylor -RRB- , Bellamy Blake -LRB- Bob Morley -RRB- , Octavia Blake -LRB- Marie Avgeropoulos -RRB- , Jasper Jordan -LRB- Devon Bostick -RRB- , Monty Green -LRB- Christopher Larkin -RRB- , Raven Reyes -LRB- Lindsey Morgan -RRB- , Finn Collins -LRB- Thomas McDonell -RRB- , John Murphy -LRB- Richard Harmon -RRB- , and Wells Jaha -LRB- Eli Goree -RRB- as they are among the first people from a space habitat , `` The Ark `` , to return to Earth after a devastating nuclear apocalypse ; the series also focuses on Dr. Abby Griffin -LRB- Paige Turco -RRB- , Clarke 's mother ; Marcus Kane -LRB- Henry Ian Cusick -RRB- , a council member on the Ark ; and Thelonious Jaha -LRB- Isaiah Washington -RRB- , the Chancellor of the Ark and Wells ' father .
In the TV series `` The 100 '' , teens are the last to return to Earth .