A group of inquisitive children embarks on an exciting journey to explore the concepts of sinking and floating. Guided by a friendly science teacher, they engage in a series of fun experiments to understand the principles of buoyancy and density. Their adventure begins with a visit to a science lab, where they are introduced to the basics of buoyancy. The children learn that whether an object sinks or floats depends on its density compared to the density of the liquid it is placed in. They are encouraged to make predictions about various objects and test their hypotheses through experimentation. As they conduct their experiments, the children use a variety of everyday items, such as apples, coins, and plastic bottles, to observe which ones sink or float in water.