A perverted family of four - father, mother, son and daughter - takes a two-day, one-night trip to a hot spring on their day off. The father and brother film every detail of the trip with their home video camera. There's exposure on the lakeside, a sister sucking her brother's dick on the ropeway, father and daughter having car sex, mother and son having a quickie in the bath, and even an orgy with the whole family. Enjoy this perverted trip where anything goes!