On Doom, Lotor is training a menacing new Robeast by having it attack creatures that resemble the Voltron Lions. While back on Arus, the Voltron Force follows up their own rigorous training exercise with a relaxing dip in the lake (This is also where the famous Allura-loses-her-bikini-top scene is located heh heh). Coran and Nanny promptly charge outside and end their fun but not without giving the Princess a lecture about how un-royal it is of her to prance about with barely a stitch of clothing on. Furthermore, they declare she should be doing something more appropriate to her station - like studying.
