A Hippy with Guts (1970)

Without a doubt, beautiful and talented singer Ninetta is the talk of the town. To win her heart, ripe Casanova Vrasidas and ambitious suitor Iraklis vainly vie for her attention, unbeknownst to them that Ninetta is already in a romantic relationship with Nikos, a wealthy and handsome man. But all's fair in love and war, and to succeed, Vrasidas has enlisted the help of Manolis, his clumsy employee and Ninettas' older brother. Nevertheless, things will take an unexpected turn when Manolis decides to pose as a hippy to help his irresponsible younger sister Jenny see the error of her ways. Now, there is no turning back. Who's going to help Manolis get out of the tight spot?