[s3e13] Join Or Die -

: After signaling, they are attacked by Grounders emerging from the sea. These "underwater" Grounders offer them "safe passage" via a sedative, which Octavia and Jasper take to meet Luna. 3. Flashbacks: The Ark

: Even when a destination looks like a "dead end," look for environmental triggers (like the signal fire) to proceed. [S3E13] Join or Die

: ALIE demonstrates that a person's greatest weakness isn't physical pain, but the threat to their loved ones. : After signaling, they are attacked by Grounders

: Flashbacks show Pike teaching the original 100 delinquents survival skills before they were sent to Earth. Flashbacks: The Ark : Even when a destination

For more detailed analysis, you can read expert reviews on Den of Geek or Telltale TV . The 100 Review: Join or Die (Season 3 Episode 13)

: The group reaches the coast but finds only rocks. Jasper accidentally discovers that green fire is the signal needed to summon Luna’s people.