The Blessed Sacrament is the great "open secret" of the Catholic Church — the great truth that Jesus Christ is in the Tabernacle and is accessible to all who believe in Him. But this truth is not immediately obvious, and thus it is not really appreciated as it should be.
The Blessed Sacrament: God With Us is a call to all Catholics to appreciate and love Our Lord in the Blessed Sacrament, for in that perpetual miracle is all the wealth of His love, and our "heaven" on earth!