3Hz

In the summer of 2021, 13-year-old Felix discovers that his vintage walkman can pick up sounds from the past. He and his friends are fascinated by the strange noises, but they also hear something disturbing - his mother, who recently passed away, was investigating a mysterious environmental disaster before her death. Determined to uncover the truth, Felix and his friends embark on a thrilling adventure to expose the looming catastrophe before it's too late. Can they prevent the disaster and uncover the secrets surrounding his mother's death?

You can stream 3Hz on: Disney+

Some TV shows that have similar genres and were produced around the same time as 3Hz include Puppy Dog Pals, A Pup Named Scooby-Doo, Beyblade: Metal Saga, Sandra, The Fairytale Detective, Be Cool, Scooby-Doo!, Clue.