Aside from her television work, Plato also worked in film, appearing in the horror film "" (1977) as Sandra Phalor, headlining the adventure-horror film "Return to Boggy Creek" (1977) as Evie Jo, and starring in the comedy film "California Suite" (1978) as Jenny Warren, the latter of which being her only critically and commercially successful film role. Starting from the mid-1980s, Plato worked sporadically in independent films, and starred as Kelli Medd in the horror game "Night Trap" (1992), being one of the first celebrities to appear in a video game.