The siblings Manga and Leco are hanging out or discussing something when the pop-up book Mytikah appears and shows to them the story of a real life hero. With the book, the duo is taken back in time to meet the character, their story and the world they lived in. The heroes of the first season are from Brazil. The siblings learn about the historical context and the lives of these characters, who are regarded as heroes because of their inspiring actions towards the world. Manga and Leco make observations and comments about the time period and its characteristics in a humorous way. The kids collaborate with the heroes to help them accomplish their mission. Once the mission is complete, they earn a paper toy relic that takes them back to the real world. Then, Mytikah disappears, the duo concludes the hero's narrative and they end up solving the conflict from the beginning of the episode.