The trio arrive on the planet and meet an alternate version of Goku, who is revealed to be part of a group called the Time Patrol. A mysterious figure emerges, introducing himself as Fu he tells Goku, Vegeta and Mai that Future Trunks is trapped on a world called the "Prison Planet", a planet where warriors from alternate timelines and dimensions fight as part of an experiment conducted by Fu. Goku and Vegeta's training with Whis and Beerus is interrupted by the arrival of Future Mai, who tells them that Future Trunks has been captured. Transcription: " Gokū Bāsasu Gokū! Kangoku Wakusei de Chōzetsu Batoru Kaimaku!" ( Japanese: 悟空VS悟空!監獄惑星で超絶バトル開幕!) Goku! A Transcendent Battle Begins on the Prison Planet!"
The first part of the series from episodes 1-20 is referred to as Super Dragon Ball Heroes: Universe Mission ( スーパードラゴンボールヒーローズ ユニバースミッション, Sūpā Doragon Bōru Hīrōzu Yunibāsu Misshon). Super Dragon Ball Heroes is presented with several alternate scenarios and possible outcomes within the franchise, it takes place after Dragon Ball Super and Dragon Ball Super: Broly. The opening theme songs for the season are "Universe Mission Series Theme Song" (episodes 1-20), "Big Bang Mission Series Theme Song" (episodes 21-28 and 30-40), and "Fight Song" (episode 29), all the theme songs are performed by Dragon Soul which is composed of Takayoshi Tanimoto, Mayumi Gojo and YOFFY. Similar to Dragon Ball GT, it is a manga-inspired installment of the Dragon Ball media franchise, created by Toei Animation instead of franchise creator Akira Toriyama. It does not store any personal data.Super Dragon Ball Heroes is a Japanese original net animation and promotional anime series for the card and video games of the same name. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly.