In Episode 1 of Season 4 of High & Fines Herbes, titled "L'aquarium mortel," JeanJass and Caballero welcome guests such as Gazo, Da Uzi, and Rim'k. This episode kicks off the season with a special challenge where participants must complete tasks in a humorous and relaxed setting. In addition to the challenges, the episode highlights discussions on cannabis culture and cooking, featuring creative recipes that incorporate cannabis.

The episode's atmosphere is friendly and entertaining, thanks to the dynamic interactions between the hosts and their guests. This episode promises to maintain the humorous and laid-back tone that has made the series a success.