Cocoon is a 1985 science-fiction/fantasy film directed by Ron Howard about a group of elderly people rejuvenated by aliens.The movie stars Don Ameche, Wilford Brimley, Hume Cronyn, Brian Dennehy, Jack Gilford, Steve Guttenberg, Maureen Stapleton,Jessica Tandy, Gwen Verdon, Herta Ware, Tahnee Welch, and Linda Harrison. The film is loosely based on the novel of the same name by David Saperstein.
The movie was filmed in and around St. Petersburg, Florida: locations included the St Petersburg Shuffleboard Club, Sunny Shores Rest Home, The Coliseum, and Snell Arcade buildings. The film earned two Academy Awards for Best Supporting Actor (Don Ameche) and for Best Visual Effects.
About 10,000 years ago, peaceful aliens from the planet Antarea set up an outpost on the planet Earth, on an island later known to mankind as Atlantis. When Atlantis sank, twenty aliens were left behind, kept alive in large rock-like cocoons at the bottom of the Atlantic Ocean. Now a group of Antareans have returned to Earth to collect them. Disguising themselves as humans, they rent a house with a swimming pool, and charge the water with “life force” to give the cocooned Antareans energy to survive the trip home. They charter a boat from a local captain named Jack (Steve Guttenberg) who helps them retrieve the cocoons. Jack likes Kitty (Tahnee Welch), a beautiful woman from the team who chartered his boat. When he spies on her while she undresses in her cabin, Jack is shocked when he discovers she is an alien. After the aliens reveal themselves to him and explain what’s going on, he decides to help them.
Next door to the house the Antareans are renting is Sunny Shores, a retirement home. Three of its residents, Ben (Wilford Brimley), Arthur (Don Ameche) and Joe (Hume Cronyn), often trespass to swim in the pool next door, thinking the house to be unoccupied. They absorb some of the life force, making them feel younger and stronger. Eventually caught in the act, they are given permission to use the pool by the Antarean leader, Walter (Brian Dennehy), on the condition that they do not touch the cocoons or tell anybody else about it. Rejuvenated with youthful energy, the three men begin to let the advantages of the pool take hold as they are relieved of their aliments (such as Joe’s cancer miraculously disappearing and Ben’s vision becoming clear, allowing him to be able to drive a car once again).
Meanwhile, Kitty and Jack grow closer and decide to make love in the pool, in which she shares her lifeforce energy with him.
The other retirement home residents become suspicious of the men after witnessing Ben’s wife Mary climb a tree with their grandson, David (Barrett Oliver). Shortly after, their friend Bernie (Jack Gilford), who obstinately refuses to use the healing power of the pool for himself and his wife, and at the retirement home carelessly reveals the secret of the pool’s rejuvenating powers. In a mad frenzy after overhearing Bernie’s slip-up, all the other elderly residents go to the pool to swim in its waters. When Walter finds them damaging one of the cocoons, he is infuriated and ejects them from the property, but too many have been in the pool at once and drained its life force. Later that evening, Bernie finds his wife Rose (Herta Ware) has stopped breathing and unable to wake up. Stricken with grief at her unexpected passing, he carries her body to the pool in an attempt to heal her, only to be informed by Walter that the pool no longer works due to the other residents draining the force in the rush to make themselves young.
Walter explains that the cocoons cannot now survive the trip back to Antarea but will be able to survive on Earth. With the help of Jack, Ben, Arthur and Joe, the Antareans return the cocoons to the sea. The Antareans offer to take them and 30 other residents of the retirement home with them to Antarea, where they will never grow older and never die. Most of them accept the offer, but Bernie chooses to remain on Earth.
Upon leaving, Ben tells his grandson, David (Barret Oliver), that he and David’s grandma are leaving for good. As all the residents are leaving, David’s mother Susan (Linda Harrison) finds out about her parents’ destination and quickly drives over to Sunny Shores. When nobody answers the door, Susan and David ask the front desk clerk John Dexter (Clint Howard) to which he says they’re “probably out dancing.” He then goes to the door of Pops, an older retiree, when Susan demands they at least ask a friend about Ben and Mary. The three soon find the majority of the rooms vacant and contact local authorities.
Meanwhile, the residents are still on Jack’s boat as it will not start. After a few fixes, the engines starts up. While the police are searching, David notices the boat starting and rushes over, jumping onto the side and climbing over as it pulls away. Now with a minor on board, the residents, Jack, and the Antareans are being chased by Coast Guard speedboats and a chopper. With little time left, David says a tearful goodbye to Ben and Mary before jumping off into the water where the boats stop to pick him up. This gives the others a chance to get away to the meeting zone. Out of nowhere a thick fog appears and strands the remaining Coast Guard boats and they call off the chase.
As the Antarean ship appears, Walter pays Jack for his services and the boat. Jack embraces Kitty for the last time and they share a kiss. He then says farewell to everyone before jumping off the boat into an inflatable raft as the boat starts rising up into the Antarean vessel. Jack watches as the boat disappears inside the ship and starts its voyage toward Antarea.
Back on earth, a funeral is held for the missing residents on the shore near Sunny Shores. During the sermon, David looks toward the sky and smiles. The film ends with the Antarean vessel going towards a bright looking planet, assumed to be Antarea.