Hot 97's Summer Jam concert is one of the biggest hip-hop shows every year. Not only does the annual event boast a star-studded line-up with the likes of Kendrick Lamar, Big Sean, Chris Brown and Fabolous, you can bet there will be plenty of surprise guests as well -- like that time Jay Z brought out Michael Jackson.

It's those unpredictable moments that we look forward to the most and 2015 is no different. So before MTV News hits MetLife Stadium in East Rutherford, New Jersey on Sunday for our annual outing here are some moments we're praying will go down at 2015 Summer Jam.

Fetty Wap On The Main Stage

Right now Fetty is scheduled to perform on Hot 97's Festival Stage, outside of MetLife Stadium before the show starts. It'll be a crime if the New Jersey native doesn't get a chance to touch the main stage.

#Groceries

So both Omarion and Chris Brown are scheduled to hit the main stage on Sunday, but what about their "Post To Be" co-star Jhené? If Ms. Aiko comes out and sings her "gotta eat the booty like groceries" lyric all the ladies in the place will go crazy.

Omeeka

Meek Mill will be on the main stage, so we're fully expecting Nicki Minaj to come out with him because we don't believe those break-up rumors.

Jay Z As A Surprise Guest

Now that we know Jay Z's Tidal will be streaming Sunday's big show, is it too much of a stretch to think that Hov may show up as a surprise guest?

Bobby Shmurda

Bobby Shmurda never got his Hot 97 Summer Jam moment. His "Hot N---a" single blew up shortly after last year's show and now Shmurda is sitting in jail awaiting trial on numerous charges. What if someone bailed him out in time to make Summer Jam though? Now that would be memorable.

Ja Rule?

Last year 50 Cent and Nas represented hip-hop's old school at Summer Jam, a few years before that Lauryn Hill took the stage. Is NY/NJ ready for a Ja Rule comeback? I know I am.

"King Kunta"

Kendrick Lamar's To Pimp a Butterfly is one of the year's top rap albums, but we haven't gotten a chance to see K. Dot perform very many songs for the LP. When he gets to "King Kunta" on Sunday, we're sure everyone in MetLife will be doing the Kunta dance.

Fab's Freestyles

Fabolous got his start freestyling with DJ Clue on Hot 97's airwaves. And last month Loso dropped his stellar Friday Night Freestyles tape. Maybe he'll perform the whole thing in its entirety. No hooks, just bars!

A Chinx Tribute

NY lost one of our soldiers when Chinx was murdered on May 17. The wounds are still fresh, but a Summer Jam tribute to the fallen MC can go a long way in the healing process.

50 Cent And Troy Ave

Troy Ave dropped his Major Without a Deal LP on Friday, Jun. 5 just in time for Summer Jam. We're betting that the Brooklyn MC will show up at the concert and we're hoping 50 comes with him so we can get a taste of their new collaboration "Bang Bang."