When his girlfriend breaks up with him after spending the year abroad, Moritz schemes to win her back by snagging a stash of ecstasy.

Lisa lands in trouble with her parents. Moritz reprograms MyTems into an online drug store and tries to make amends to Lenny.

Business is booming, and Buba wants a piece of the action -- but the product is getting bad reviews. Lisa thinks Dan has been ignoring her.

Moritz's reputation takes a hit. After discovering a troubling email, Lenny confides in a new friend. Jens enlists Moritz to crack a password.

Lenny sets up the clear web shop while Moritz secretly meets a new supplier in Rotterdam. But the friends don't see eye to eye about their future.

Things begin to unravel the day after the party, and Moritz is forced to turn to his rival for help. Lisa has a change of heart.

Under pressure from Goodtimes, Moritz races to rebuild MyDrugs during a school trip to the woods, but code bugs — and allergies — derail his progress.

Lenny helps Moritz with the site on one condition: that they keep their collaboration a secret. Meanwhile, Jens frets about his son's future.

Moritz hires a high-priced business consultant. Kira and Dan come up with new ways to raise money for Lenny's medical treatment.

The guys take a road trip to Rotterdam. Marie asks Lisa to keep an eye on her brother. When Moritz crosses a line, Dan does damage control.

To celebrate the end of their Abitur exams, the students throw a costume party at school — and things get a little out of control.

A high-stakes situation leaves the friends scrambling to figure out their next move.