"Pain & Gain" star Mark Wahlberg is getting ready for the next installment of the massively popular "Transformers" franchise, one that will feature exactly 100 percent more of him. Wahlberg revealed during Sneak Peek Week, days before this Sunday's MTV Movie Awards, that he didn't even flinch when Bay approached him with a mystery project.

"One day he was just like, 'Hey, do you want to do another movie?' and I said yes," Wahlberg recalled to correspondent Josh Horowitz. "He goes, 'You wanna know what it is?' [I replied] 'Well if you want to tell me, but I want to do it." That film turned out to be "Transformers 4," a project that Wahlberg jumped at the chance without even knowing the role he would play. "[Michael Bay asked] 'Do you want to know what the part is or what the story is?' I go 'Whatever you want to tell me, tell me, but I'm in.' "

Bay's desire to return to the franchise, one he seemingly concluded with 2011's "Transformers: Dark of the Moon," came while the director waited in line for the Transformers ride at Universal Studios. "I was like, 'Wow, a lot of people like this.' I wanted to do it one more time... but then I brought Mark in and he's actually harassing me to do more."

Watch exclusive 'Pain & Gain' clip now!

Wahlberg has a vested interest in doing more of the films. "I went home and I told my kids, 'DudesI'm going to be in "Transformers"!' They're like 'Yeah, shut up daddy. You're lying. You don't make movies that we want to see!' " Now it looks like Wahlberg's kids will have the chance to purchase action figures with their dad's likeness as well as see him mix it up onscreen with transforming robots.

Bay reassures the loyal Transformers fanbase that there is another chapter to the war between the Autobots and Decepticons. "This fourth one is going to feel very fresh," says Bay. "It's not revisiting a lot of the same territory."

You can catch "Pain & Gain" in theaters on April 26. Be sure to check out the rest of MTV's exclusive interviews during Sneak Peek Week, the event week that celebrates movies and moviegoers leading up to the MTV Movie Awards on Sunday, April 14 at 9 p.m. ET.

The 2013 MTV Movie Awards are a wrap! Stick with us for red-carpet photos, our Movie Awards winners list and more exclusive movie premieres.