A futuristic laboratory has erased the identities of lost young people, and now imprints them with the temporary identities they need to fulfill assignments for clients.
Shame they held all this good stuff until Dollhouse was already a dead-show-walking, as its earlier arrival might have helped the show hold on to more viewers.
It's situations like this, where we get a particularly clever (albeit twisted) use of the Dollhouse concept that have occasionally given this show a spark it often lacks.