Bob and Joan Sargent raised 12 kids, eight of whom they adopted. Now the children are grown up and the parents struggle to help those with special needs and mental illness. Filmmaker Liz Sargent wonders who will care for her parents as they get older and who will inherit the responsibility for the siblings who cannot care for themselves. The Sargent family navigates the hard truths of aging, disability, adoption and an evolving definition of family.