Alvin and the Chipmunks Meet Frankenstein

Alvin and the Chipmunks Meet Frankenstein is a 1999 animated horror comedythemed directtovideo film, produced by Bagdasarian Productions, LLC. and Universal Cartoon Studios, distributed by Universal Studios Home Entertainment and based on characters from Alvin and the Chipmunks. The film was released on VHS in 1999 and DVD as a Monster Pack with Alvin and the Chipmunks Meet the Wolfman, Monster Mash, and four episodes of Archies Weird Mysteries in 2004 by Universal Studios Home Entertainment.

The Chipmunks are performing at a theme park called Majestic Movie Studios a spoof of Universal Studios Hollywood. While taking a break from their concert, the Chipmunks get lost, and eventually get locked inside the park. They find their way to the Frankensteins Castle attraction, where a real Dr. Victor Frankenstein is working on his monster. The monster is brought to life, and the doctor sends it in pursuit of the Chipmunks. In their escape, the monster retrieves Theodores dropped teddy bear.The monster follows the Chipmunks home and returns the bear to Theodore, who quickly befriends him. The Chipmunks learn that the monster whom Theodore has nicknamed Frankie is truly goodhearted. Dave goes to the park to book a concert that night to celebrate the premiere of an anticipated film. Dr. Frankenstein tracks Frankie to the Chipmunks home, and, angered at the monsters benevolence, kidnaps Alvin. Simon, Theodore, and Frankie hurry back to the park to rescue Alvin. ........

Source: Wikipedia