The Winchester brothers of the CW's hit TV series, "Supernatural," have encountered a lot of ghoulish creatures in the entire course of the show.

However, an unlikely crossover event in season 13 will take Sam (Jared Padalecki) and Dean (Jensen Ackles) to an adventure inside an actual cartoon show. The upcoming episode 16, titled "Scoobynatural," will feature the popular "Scooby-Doo" squad as the Winchesters race against time to return to the real world.

"Supernatural" season 13 episode 16 will see the cartoon versions of Sam, Dean and Castiel (Misha Collins) as they find themselves trapped inside the "Scooby-Doo" dimension.

According to the official episode synopsis, the Winchester brothers will team up with Scooby-Doo, Shaggy, Velma, Daphne and Fred as they try to solve a mystery that made their two worlds meet. It is still unknown how Sam and Dean are transported to the "Scooby-Doo" cartoons, although Dean's obsession over the show during his childhood days could help them survive inside this dimension.

So far, the spoilers for "Supernatural" season 13 episode 16 show that a magical television set will be the culprit behind the "Scoobynatural" crossover. Specifically, a Sam and Dean will come across a pawnshop with a dusty TV placed on sale. Seeing the brothers, the pawnshop owners will offer them the TV for free, thus making Sam doubt his intentions.

Nevertheless, the two will take the TV anyway as Dean believes that there is something special with it. Little do they know that this will introduce one of the most unforgettable moments in their lives by getting both of them inside the "Scooby-Doo" world.

"Supernatural" season 13 episode 16 will feature the 1970's classic "Scooby-Doo" episode titled "A Night of Fright Is No Delight." Aside from the usual ghosts and monsters in the cartoon, the Winchesters will have to deal with an unseen enemy from the real world that may also be behind their situation.

"Supernatural" season 13 episode 16 will air on March 29th, Tuesday, at 8 p.m. EST on The CW.