A Chipmunk Reunion
A Chipmunk Reunion is a 1985 animated special produced by Bagdasarian Productions, in association with Ruby-Spears Enterprises, and is spun off of NBC's popular animated series, Alvin & the Chipmunks, starring the Chipmunks and the Chipettes.
The special begins at home one night when Alvin, Simon and Theodore were arguing about when exactly they were born. Theodore insists they were born on the 12th, Alvin insists it was the 15th, and Simon insists that it was the 18th. But not even their adoptive father, Dave Seville, knows the exact date (he celebrates their birthday on the day he found them), so Alvin decides that the only way to find out, would be to look for their long lost mother. However, Dave would never let them go, so they decide to have their female friends, The Chipettes, take over the house. When Dave comes downstairs the next morning and sees the girls there, he realizes that the boys went to find their mother, and fears that they could get hurt by wild animals in the forest. So, he sets out to find them, while the girls join him on his search.