Starting off illustrating the same Chloroplast cell, cylinder-like Light reactions, and the circular Calvin cycle from the previous lesson, this video goes further to show the ADP, Phosphate, and NADP+ reacting with electrons within the Light reactions and forming the ATP and NADPH. An H2O molecule is then shown entering the Light Reaction, with O2 being released. In the next stage, the energy, electrons, and carbon from the ATP, NADPH, and CO2 are shown entering the Calvin cycle, in order to produce the outcome of sugar molecules.