This chapter introduces the argument that pervades the collection that families are in motion both conceptually and in practice. It articulates the motion of family and families, which are made through space and time, and explains the ways in which the book develops current thinking on family. It also situates the concept and practices of family within wider debates and contexts. The chapter then details the contribution of each of the chapters to this argument, which are organised around three thematic parts: moving through separation and connection; uneven motion and resistance; and traces and potentialities. The chapter draws out six conclusions from the chapters in the collection.