'The Big Bang Theory' season 9 spoilers: The guys head to Mexico in episode 3 'The Bachelor Party Corrosion'

The boys of "The Big Bang Theory" Season 9 Episode 3CBS

A fun new episode of "The Big Bang Theory" season 9 airs today, Oct. 5. The installment, titled "The Bachelor Party Corrosion," lives up to its title as fans will see the men of science in something they wouldn't usually be in – a bachelor party.

The synopsis for the upcoming episode teases that Raj and Howard will throw the shindig. Knowing that Leonard was not given a bachelor party he deserves, the duo makes it their mission to have him experience that, and so they planned a cool jaunt in Mexico for the weekend.

Raj and Howard will sort of kidnap Sheldon and Leonard from their place as their way of inviting them. As it has always been with bachelor parties, guys tend to abduct their soon-to-be-hitched pal and scare the living daylights out of him for some shock value. Raj and Howard will really get into that kidnap part. They even have blindfolds.

Unfortunately, while Raj and Howard seem to be successful in taking Leonard and Sheldon, the bachelor party does not go as they planned it. A promo still from "The Big Bang Theory" season 9 episode shows that the van they are riding on the way to their destination breaks down in the middle of nowhere.

Apparently, they are a flat tire away from that bachelor party and it looks like it will take them quite a while to fix it. It will be interesting to see how the guys use their unparalleled science knowledge to change their tires. In the image, night has already taken over the road. It looks like they will be stuck there for long hours.

Meanwhile, "The Big Bang Theory" season 9 episode will see the girls convince Penny to tell her parents about eloping with Leonard. The installment will also see Amy consider a makeover as a step to move on from her breakup with Sheldon.

"The Big Bang Theory" season 9 episode 3 "The Bachelor Party Corrosion" airs today at 8 p.m. on CBS. Watch it on live stream via CBS All Access or via the CBS app.