Watch The Full Trailer For 'Ghostbusters: Afterlife'

Any true 'Ghostbusters' fan would have hoped to have seen the latest movie in the saga countless times by now, but its original release date of July 2020 was delayed due to the pandemic and it's only today that we've finally got to see the film's full trailer.

The two-and-a-half-minute-long trailer for 'Ghostbusters: Afterlife', which stars Paul Rudd in the role of a local school teacher living in the town of Summerville.

The town is also home to Callie, a single mother played by Carrie Coon, and her two children played by Mckenna Grace and 'Stranger Things' star Finn Wolfhard. The kids soon stumble upon the family's forgotten history hidden in their Oklahoma farmhouse, which once belonged to their grandfather, original Ghostbusters Egon Spengler.

The movie will follow the story of the kids, as they battle a series of paranormal events that seem to be emanating from an old mine in the rural town.

Although the movie revolves around a new generation of Ghostbusters, expect some blasts from the past, Bill Murray, Ernie Hudson, Sigourney Weaver will cameo as their original characters in the 2021 movie.

Annie Potts appears in the new trailer as Janine Melnitz, as does Dan Aykroyd... or at least his hand does at the very end of the trailer, when we hear him pick up the phone in his occult book shop and tell the caller "we're closed."

The trailer shows Egon's grandkids, Phoebe and Trevor uncovering his forgotten legacy. The house is seemingly packed full of the boys in grey's old ghost hunting gadgets, including PKE meters, ghosts traps, proton packs and even old ECTO-1 rusting in a barn.

These new discoveries look like they'll come in handy as the town they living is undergoing strange seismic activity despite the fact the town has no fault line and is nowhere near a tectonic plate. Before long, the town is overrun by the living dead, despite there being no ghost sightings in 30 years.

As well as cameos from two of the original cast members, the trailer is packed full of throwbacks to the original films, including the Ghostbusters original corny television commercial - "we're ready to believe you" - and old photographs of the gang in their 80s heyday in New York City.

Today's trailer follows a teaser clip posted online earlier this year which showed Rudd wandering around a supermarket in Summerville, where he encounters a pack of miniature Stay-Puft Marshmallow men. Seconds later we see a gang of Mini-Pufts causing havoc in the supermarket by toasting each other and even turning themselves into s'mores.

Mr. Stay-Puft has been an iconic character in the Ghostbusters franchise after first appearing in the original 1984 'Ghostbusters' film as the physical manifestation of the apocalyptic Sumerian deity Gozer.

The marshmallow men may not be the only throwback to the original film that will find its place in the new movie. We already know that the movie revolves around the grandchildren of Egon, our first clue to this throwback was in a the collection of spores, moulds and fungus seen in a previous trailer.

This previous trailer also introduced us to the Shandor Mining Company, almost certainly a reference to Ivo Shandor, the leader of the Cult of Gozer.