Raindrops kept falling on my head...Shalalal...shalalal...Raindrops kept falling on the Green GreenGrassland... How peaceful and lovely! Honloonloon! Honloonloon... But heavy rain got this peaceful grassland in danger. Giant and nasty bullfrogs appeared to this grassland after rainfall, their dreadful big eyes were following the little frogs’ movements as if they were preys. This ruined Green GreenGrassland is no longer a safe haven to little frogs. Can Little Heymon lead his friends to get away from threats and find out another place where is safe enough to be called “home”? A heart-stopping adventure is ready to begin.