When children start vanishing from the fictional German town of Winden, four families must band together to discover the conspiracy behind the disappearances. The story starts out in 2019, but also takes place in 1986 and 1953 due to time travel. In the second season, there are additional storylines set in 2053 and 1921. As you can expect, there's certainly a lot of mystery and intrigue from a complicated (and slightly confusing) time-travel plot.
Dark is currently streaming on Netflix.