Beauty on the Beach (1950)

Mighty Mouse the mightiest mouse of them all swoops down from the skies to rescue Pearl Pureheart from death on the rollercoaster rails at the amusement park Oil Can Harry the meanest villain of them all is cursing at being foiled once again by the superhero and even manages to get the upperhand on Mighty and put Polly Pureheart again in the path of peril but you cant keep a good mouse down and once again here comes Mighty Mouse to the rescue