
Synopsis
After Felix' walkman gets fixed with clock parts, he is able to hear the past with it. And he slowly finds out his mom's death wasn't just caused by a normal disease. With help from his friends he starts to investigate and discovers the devastating reason for his mom's death.
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Cast
Seasons
Season 1
13 eps · 2021-09-01
Season 2
13 eps · 2022-07-01
Season 3
13 eps · 2023-07-03
View TMDB-provided episode dates, cast, and synopsis for 3Hz. 3Hz is listed on Ketnet.





