|Air Date||August 16, 2014|
|Season||Dark Kingdom Arc|
|Total Episode #||4|
|Previous||Act 3. Rei, Sailor Mars|
|Next||Act 5. Makoto, Sailor Jupiter|
Luna and the Sailor Senshi suspect that the treasure at an embassy party being held by the kingdom of D, the world's largest producers of diamonds could be the Silver Crystal. The Dark Kingdom want to find out if the crystal is the Silver Crystal too, so they can use it to revive their master.