Joe and Cheryl Torline became instant empty nesters last fall when their quadruplets all headed off to Indiana University on the same day. As mom and dad Torline struggled to fill the space left behind, Allison, Eric, Melanie and Vanessa tried to assert their individuality on campus after growing up as a foursome.

We sat down to talk with the Torline family, and at one point, they reminisced about the moment they discovered they'd be having four more children:

The full interview will air this Saturday.