IMDB has added 1-2 sentences about the events in each of the 8 episodes and the titles of the first two.
The info copy-pasted from IMDB:
spoiler
One Piece (2023) S1.E1 ∙ Romance Dawn August 31, 2023
A boy named Monkey D. Luffy embarks on a journey to attain the greatest treasure: the one piece. After the former pirate king’s public execution 22 years ago, the world has entered a great pirate era, and Luffy aims to be at the top.
S1.E2 ∙ The Man in the Straw Hat
Luffy, Zoro, and Nami find themselves imprisoned on an island overtaken by the deranged clown pirate, Buggy. Koby joins the Marines and proves his mettle.
S1.E3 ∙ Episode #1.3
Luffy, Zoro, and Nami land in Syrup Village, where they meet Usopp, a local who introduced the group to Kaya, a sickly shipyard heiress under the care of trio of overbearing house staff. With the help of Koby, Vice Admiral Garp, a powerful marine, sets off in search of Luffy.
S1.E4 ∙ Episode #1.4
Luffy, Zoro, and Nami fight their way through Kaya’s mansion, which has now become a prison. Usopp enlists the help of Koby, Helmeppo, and the Marines. Luffy finally gets the ship of his dreams as Garp closes in.
S1.E5 ∙ Episode #1.5
Luffy and the gang are tested in their ability to fight together on the high seas. They arrive at Baratie, a floating restaurant, where they encounter Sanji, a young chef with a love of fine dining. A duel on the docks shocks the group.
S1.E6 ∙ Episode #1.6
The group is ambushed by a threat no one sees coming. After a hard-fought battle at the Baratie, Sanji finally follows his dreams while another crew member shows their true colors.
S1.E7 ∙ Episode #1.7
The crew comes to the aid of a member in dire need of a family.
S1.E8 ∙ Episode #1.8
A new pirate crew is born.
Source: https://www.imdb.com/title/tt11737520/episodes?season=1