Freddie Fieldmouse and The River Rescue

Freddie Fieldmouse is enjoying a wonderful ride around the
countryside sitting on the head of his friend Horace the Horse.
But then... Freddie falls headfirst into the river as Horace bends
down to take a drink. Freddie can't swim and there's a dangerous
waterfall looming.
Can Freddie be saved from a watery grave?