Liesel Meminger is dispatched to live with foster parents, Hans Hubermann and his strict wife Rosa. One night, a Jewish refugee called Max arrives at the Hubermanns' home and they offer him shelter in the basement.
Emmet is an ordinary LEGO mini-figure, who is mistaken for a mythical figure known as Master Builder. Before he can clear up this unfortunate misunderstanding, Emmet is press-ganged into leading the quest to defeat a nefarious LEGO tyrant.
Sherman accidentally lets slip that his canine guardian, Mr Peabody, has a time travel machine hidden below ground. Classmate Penny insists they take a look and the children accidentally create ripples through time.