Batman and Robin, battling two members of Smiley Gober's gang at the Aladdin Lamp Company, are dismayed when one of the gangsters accidentally triggers a ray-machine's beam on Batman, causing him to become invisible. After the hoods are taken by the police, a scientist at the plant explains to Batman that the machine is used to experiment with light waves, and the ray which caused his predicament is unknown to them. The invisible Batman carries on, even though he knows he will have to make a televised appearance later in the week with the Gotham Community Chest, as Bruce Wayne. Batman and Robin next encounter Smiley and his gang going through bags of soy flour at a bakery. When they detect the unseen Batman's footprints in spilled flour, the gangsters employ a vacuum cleaner filled with so