Tati is a typical teenager, unable to learn mathematics, but very intelligent when creating plans to escape the punishment of the mother. During the summer, she needs to hide that she has to do math classes to improve her grades, conquer Zeca, the most popular boy in school and also care for the heartache of her mother, who wants to try to find a new love.
Unfortunately the movie O Diário de Tati is not yet available on HBO Max.
| Directing | Mauro Farias | Director |
| Writing | Paulo Cursino | Screenplay |
| Writing | Heloísa Périssé | Screenplay |
| Writing | Tiza Lobo | Screenplay |
| Writing | Maria Camargo | Co-Writer |
| Writing | Rene Belmonte | Co-Writer |
| Production | Carlos Eduardo Rodrigues | Associate Producer |
| Production | Tiza Lobo | Executive Producer |
| Production | Juliana de Carvalho | Executive Producer |
| Sound | Ricardo Leão | Music |
| Editing | Carlos Roberto Mendes | Editor |
| Costume & Make-Up | Valeria Stefani | Costume Design |
| Costume & Make-Up | Uirandê Holanda | Makeup Artist |
| Directing | Janaina Ferreira | Second Assistant Director |
| Sound | José E. Caldararo | Foley Artist |
| Sound | Juarez Dagoberto Costa | Sound Director |
| Sound | Bechen de Loredo | Foley Mixer |
| Sound | Ney Fernandes | Sound Editor |
| Sound | Vinicius Leal | Sound Editor |
| Sound | Simone Petrillo | Sound Editor |
| Sound | Claudio Valdetaro | Sound Mixer |
| Visual Effects | Rogério Marinho | Visual Effects |
| Camera | Tiago Rivaldo | Second Assistant Camera |
| Camera | Nonato Estrela | Director of Photography |