One Direction has a big announcement - and so far it looks like it has something to do with their new single "Best Song Ever" as well as the release of the first full-length trailer for their 3D concert movie "This Is Us."  

The film, directed by "Super Size Me" creator Morgan Spurlock, will be out in theaters on August 30. Harry Styles, Naill Horan, Louis Tomlinson, Zayn Malik and Liam Payne show the struggles of their incredible success as well as their playful, boyish pranks in the clip. Most importantly, the trailer shows that the boys have their priorities in order, as they demonstrate their connection to their family and fans.

As The Los Angeles Times writes, we learn in the video that Harry Styles wanted to entertain people since he was a kid. Liam Payne's father always told people his son could sing. And that at school Louis Tomlinson was "that guy that made people laugh."

"We're normal people doing this abnormal job," Niall says in the clip.

The trailer reveals that Zayn buys his family a house.

"I know you used to always say that I'll get you a house when I'm older," Zayn's mother says to him over the phone as she walks into her new home. "Thank you for what you've done for us. I'm so proud of you."

And Liam's mom gets emotional over her son's success.

"I miss my son so much," Liam's mother says in the clip before apologizing for tearing up.

The British boy band then visits the small bakery where Harry used to work, and he calls out an employee who "used to pinch my bum!"

In a series of shots, 1D thanks their Directioners, devoted fans of the band, who have supported them since their days on the "X Factor."

"We are so thankful," Louis said. "This is a teamwork between us and them."

At the end of the trailer, we hear a few teasing verses of "Best Song Ever."

Watch the trailer here: