Series 1: https://youtu.be/vx7aCkLVR4I
Series 2: https://youtu.be/tXU_XmDiOlI
Excellent, well-made series based (amazingly) on real-life events. The narrator/dealer Moritz is an endearing character as are his sidekicks - the good-looking rich kid who, slightly surprisingly, is one of the gang and his wheelchair-bound best buddy and gaming/programming whizz , Lenny.
German-made it has nevertheless many of the better characteristics of a typical USA High School coming of age saga. The growth of their business and the dangerous people they get involved with is very well told - and convincing too. The light touch seen in the scripts goes well with moments and genuine tension and concern.
Characters, even minor ones, are well-rounded and interesting while often being recognisable types as well - a tricky combination to bring off but when it succeeds (as here) highly enjoyable.
Good news that a third series has been commissioned - and that fact and the very end of the second series confirm that the story is far from over.