When the discovery of an ancient artifact unleashes an evil force, Ghostbusters new and old must join forces to protect their home and save the world from a second Ice Age.
After moving to a retirement community, loner Martha eventually befriends her fun-loving neighbor, Sheryl, and forms a cheerleading club for young-at-heart seniors, though they face roadblocks along the way.
The Doctor and his companion travel across time and space encountering incredible friends and foes.