Born with mysterious powers she does not know how to control, young Jieun accidentally causes her family to vanish. She vows to live a million lives in search of them.

Finally, one night, she brings the Marigold Mind Laundry into existence. Its service: to remove the deepest pain from our hearts. Jieun listens while customers share their unhappy memories. As they speak, she transfers their sadness onto T-shirts as stains. After a spin in the washing machine, the stains become flower petals that soar into the air, and Jieuns customers find solace.

Five wounded souls come to Jieun for help: a frustrated young filmmaker, a spiraling social media influencer, a mother betrayed by her husband, a woman jilted by her lover, and a talented photographer who hides in the safety of a mundane job. As Jieun listens to each of their stories, she learns that the will to heal is not a rare gift, but a power we all possessif only we are open to it.