Warner Bros has published a new trailer for “Joker: Folie à Deux” from acclaimed writer, director, and producer Todd Phillips. The new film stars Joaquin Phoenix once again in his Oscar-winning dual role as Arthur Fleck/Joker, opposite Oscar-winner Lady Gaga.

This new trailer which went online right after it debuted at Warner Bros.’s CinemaCon presentation in Las Vegas, got off to a stellar start with 167 million viewers in its first 24 hours.

According to Variety, the “Joker” sequel’s trailer became Warner Bros.’ biggest launch in recent years surpassing the first “Barbie” trailer, becoming instantly the #1 trending video on YouTube on premiere night on that platform alone, remaining on trending videos nearly two days after its launch. The trailer also dominated X during its first 24 hours, with 10 terms related to the movie trending.

“Joker: Folie À Deux” finds Arthur Fleck institutionalized at Arkham awaiting trial for his crimes as Joker. While struggling with his dual identity, Arthur not only stumbles upon true love, but also finds the music that's always been inside him. The film also stars Oscar nominees Brendan Gleeson (“The Banshees of Inisherin”) and Catherine Keener (“Get Out,” “Capote”), alongside Zazie Beetz.

Phillips, who was nominated for Oscars for directing, writing, and producing “Joker,” directed “Joker: Folie À Deux” from a screenplay by fellow Oscar nominee Scott Silver & Phillips, based on characters from DC.  The film was produced by Phillips, Oscar nominee Emma Tillinger Koskoff and Joseph Garner.  Lady Gaga served as a music consultant.  The film’s executive producers are Michael E. Uslan, Georgia Kacandes, Silver, Mark Friedberg, and Jason Ruder.

“Joker: Folie À Deux” will debut on the big screen on Oct. 4 — exactly five years after the first film. The sequel will screen in the Imax 70mm format.