'Luca' — release date, cast, plot, trailer and all you need to know

Alberto and Luca in Luca.
Alberto (Jack Dylan Grazer) and Luca (Jacob Tremblay) experience life on land in Luca. (Image credit: Disney)

Dazzling animation Luca brings to life a young sea monster’s magical rites-of-passage journey on Disney Plus.

The one-off Pixar film sees teenage Hollywood star Jacob Tremblay, best known for Room and Wonder, provide the voice of shy sea monster Luca, who embarks on a stunning adventure as he heads about the waves.

Here’s everything you need to know about Luca

Luca release date

The feature-length film will air on Disney+ from Friday 18 June.

What’s the plot?

Luca and Alberto in Luca.

Luca (Jacob Tremblay) and Alberto (Jack Dylan Grazer) explore Portorosso in Luca. (Image credit: Disney)

Luca, inspired by the friendships and holidays of director Enrico Casarosa’s Italian childhood, follows the titular teenage sea monster who lives off the Italian coast with his strict parents but is curious about the human world on land. 

After meeting another sea monster, confident Alberto, Luca is lured out of the water and is shocked when they both suddenly turn into human boys. But as Luca is taken under Alberto’s wing, he quickly falls in love with life on shore. 

As the boys head into the seaside town of Portorosso, they encounter local girl Giulia and prepare to join her in a thrilling triathlon in the hope of winning the prize money and getting a Vespa scooter. But danger beckons if their true identities as sea monsters are revealed...

“Luca’s nervous because his parents are super protective. They tell him that it's scary above the water,” says Tremblay. “But he and Alberto have such a good friendship — Alberto’s brave and helps Luca come out of his shell, and Luca helps Alberto, who’s not as smart. And Vespas symbolise freedom for Luca, he ends up going on an adventure, and Giulia shows them both that maybe the human world isn't so bad. But there are people who are trying to catch sea monsters…”

Who is in the cast of Luca?

Along with Tremblay as Luca, It’s Jack Dylan Grazer is Alberto, newcomer Emma Berman is Giulia, Italian comic Saverio Raimondo is town bully Ercole Visconti, The Mitchells vs. The Machines’ Maya Rudolph is Luca’s protective mother Daniela, comedian Jim Gaffigan is Luca’s dad Lorenzo, Ray Donovan’s Sandy Martin is Luca’s grandma and stage actor Marco Barricelli is Giulia’s dad, imposing fisherman Massimo.

What else do we know?

Starring in a Pixar movie is a dream come true for Tremblay.

“Pixar films were a great part of my childhood. Lightning McQueen [from Cars] was my favourite character. So to be a part of a Pixar film, and have younger kids look up to these characters in the same way I looked up to Lightning McQueen, it's really cool,” says Tremblay who will next be seen under the sea once more as Flounder in the live-action version of The Little Mermaid.

“We started working on that a while ago and slowed down because of COVID, but I’m so excited,” he says. “Being able to play Flounder is awesome — The Little Mermaid is another huge part of my childhood!”

Caren has been a journalist specializing in TV for almost two decades and is a Senior Features Writer for TV Times, TV & Satellite Week and What’s On TV magazines and she also writes for What to Watch.


Over the years, she has spent many a day in a muddy field or an on-set catering bus chatting to numerous stars on location including the likes of Olivia Colman, David Tennant, Suranne Jones, Jamie Dornan, Dame Judi Dench and Sir Derek Jacobi as well as Hollywood actors such as Glenn Close and Kiefer Sutherland.


Caren will happily sit down and watch any kind of telly (well, maybe not sci-fi!), but she particularly loves period dramas like Call the Midwife, Downton Abbey and The Crown and she’s also a big fan of juicy crime thrillers from Line of Duty to Poirot.


In her spare time, Caren enjoys going to the cinema and theatre or curling up with a good book.