Stella有個海邊的好朋友Seagull, 總會定期來到她身邊，但有一天她發現Seagull不再出現，於是Stella跟媽媽到海邊去尋找牠，原來是Seagull吃進海裡的塑膠製品生病了。人類的疏失造成海裡動物的大量滅絕，因為動物們總在不自覺吞進不該吃的物品。小小的Stella決定辦一場Bech Clean Pary，讓大家一起參與海邊活動，做淨攤。親愛的孩子們，如同作者在故事封面所要告訴大家的: You're never too small to make a big difference.
Spurred into action when her seagull friend gets poorly from eating plastic, young Stella is soon on a campaign for change. A beach clean up and plastic straw ban sparks her whole community into action and soon Stella is making a big impact. And it's not long before the little seagull and all its animal friends can live in a better environment.
