A group of bored rich teens organize an illegal party in the catacombs beneath the Munich central train station. But they are unaware that beneath the city streets dwell the “Invisibles,” a people cast out and forgotten by the world above. When a fire breaks out at the party, panic takes hold. With her best friend, Janosch, Nellie sets off to search for her missing brother.
Echos Ep. 1
In the panic of the fire, many are injured; three are missing. With her best friend, Janosch, Nellie sets off into the darkness to find her brother, Max.
Echos Ep. 2
Nellie seeks help from an unexpected source in her search for Max, and Janosch has questions about his birth parents.
Echos Ep. 3
Nellie discovers the truth about Janosch’s origins, and Janosch breaks a promise, jeopardizing Nellie’s best chance at finding Max.
Echos Ep. 4
Nellie is on the brink of finding Max when another body is discovered, and Janosch also has to grapple with death.
Echos Ep. 5
Because Tyler is also searching for someone, she and Nellie join forces, while Janosch makes a discovery about a relative.