PARK Dongsu is living independently from the disabled facility where he has been living for over 20 years. He began writing poetry at the facility, won a poetry contest, and participated in a collection of poems by people with cerebral palsy. However, he is having a hard time writing poetry these days. Meanwhile, he has a hobby of raising tropical fish. One day, he goes to the aquarium and buys a fish called "Corydoras". At home, he stares at the Corydoras for a long time before falling asleep. Then he dreams about the facility where he lived in the past.