An 'Infinity Pool Plan' refers to a design of a pool that appears to extend to the horizon, creating the illusion of being endless. This type of pool design often features a shallow end that slopes gently into the water, with the water's edge blending seamlessly with the surrounding landscape or horizon. The term 'lounge' suggests an area for relaxation or socializing adjacent to the pool, possibly with seating or sun loungers. The plan would be a detailed drawing or layout showing the dimensions, layout, and features of both the pool and the lounge area.