In the movie, when Pain and Panic kidnapped Hercules and made him drink the potion to turn him mortal, Amphitryon and Alcmene heard them, causing Hercules not to drink the whole potion and keep his godly strength, while Pain and Panic fled to find somewhere to hide. Amphitryon and Alcmene find Hercules, and Alcmene picks him up, telling him not to cry. Amphitryon and Alcmene believe that the Gods have answered their prayer to have a child, and they read Hercules' name on his medal, which shows the symbol of the Gods.
But before they can do anything, Pain and Panic, who have turned themselves into snakes, try to attack Amphitryon and Alcmene, but Hercules manages to grab them and throw them far, far away with his divine strength. Though initially shocked by the infant's power, Amphitryon and Alcmene take Hercules to their home and raise him as their own son while his biological parents watch Hercules grow up from Mount Olympus.
Years later, when Hercules has grown into a young teenager, he and Amphitryon go into town, to which Hercules pulls the cart with his strength after the family donkey, Penelope, twisted her ankle. Once in town, Amphytryon asks Hercules to stay by the cart, to which Hercules does, until he tries to catch a flying disc for a group of boys, when he hits his head into a column causing it to fall. Hercules tries to help by catching the column before it falls, but this causes destruction to the whole town. Led by pottery salesman Demetrius, who finally vents his fury at Hercules over the destruction of his merchandise and the marketplace, the whole town blames Hercules for the destruction, and Demetrius tells Amphitryon to keep him away from there, adding in the final insult with calling Hercules a "freak", which the rest of the town agrees on, leaving Hercules crushed. After this, Amphitryon tells Hercules not to listen to the peoples' comments, but Hercules begins to question where he really belongs.
Later on, Amphitryon and Alcmene decide to tell Hercules about finding him and show him the medal with his name on it, which has the symbols of the Gods on it. Hercules decides to go to the Temple of Zeus and find out where he belongs, but tells Amphitryon and Alcmene before he leaves that they're the greatest parents anyone could have.
The next day Hercules hugs Amphitryon and Alcmene good-bye as he journeys on his quest to find out where he belongs. During the song "Zero to Hero" Amphitryon and Alcmene are seen buying Hercules souvenirs after Hercules becomes famous for saving the world from monsters, and now have a bigger house. In the end, when Hercules decides to stay on Earth with Meg instead of becoming a God again, he is reunited with Amphitryon and Alcmene and they watch as Hercules' biological father Zeus paints a picture of him in the sky for being a true Hero after rescuing Meg from Hades.
- In traditional myth, Alcmene was not Hercules' adoptive mother, but his biological mother. Amphitryon was still unrelated to Hercules, though he was his stepfather. Also, in contrast to their portrayal as peasant farmers in the Disney film, the mythological Alcmene and Amphitryon were of royal blood.