One day, Floaty Balloon living in the 'Balloon World' was thrown away from home due to the unexpected invasion of park by the 'Bigbostome'. Awaken, he realizes that he was in the dry desert of 'Dry Dry Land'. Then Floaty Balloon asks to 'Gentle Wind' to return home. To go back home, he has to complete the mission of blooming the flowers together with the Gentle Wind.