Ghostbusters: The Animated Series Season 1 Episode 4 The Secret of Mastodon Valley

Premiering in 1986 as a spinoff of the wildly popular 1984 Ghostbusters film, Ghostbusters: The Animated Series follows the adventures of a team of paranormal investigators and eliminators as they take on supernatural foes and save the world from ghosts, ghouls, and other entities from beyond.

In Season 1, Episode 4, "The Secret of Mastodon Valley", the Ghostbusters find themselves investigating a prehistoric mystery that threatens to wreak havoc on modern-day New York City. After a group of construction workers unearth a strange artifact in Mastodon Valley, they accidentally awaken a long-dormant ghostly creature that begins terrorizing the city.

The Ghostbusters are called in to figure out what's going on, and quickly discover that the artifact is actually a key to an ancient portal that could unleash all sorts of chaos if it falls into the wrong hands. With the help of their trusty equipment, including proton packs and ghost traps, the team sets out to stop the ghostly creature and close the portal before it's too late.

Along the way, the Ghostbusters encounter a host of strange and dangerous supernatural entities, including a pack of ghostly dinosaurs and a group of ancient warriors who have been guarding the portal for centuries. As they battle against these powerful foes, the team must also contend with their own egos and personal demons, as they work to overcome their own fears and weaknesses.

Despite the high stakes and intense action, "The Secret of Mastodon Valley" also features plenty of humor and heart, as the Ghostbusters banter and bicker their way through their mission. With its memorable characters, witty writing, and thrilling ghostbusting action, this episode is sure to captivate audiences of all ages and become a fan favorite of the series.