Sean (O'Dowd) is the imaginary friend of 10-year-old Min Moone, the youngest child of a family living in a small town in Ireland. Min has a unique perspective on life aided by an imaginary friend. His imagination es into play both in his childish drawings, which e alive through animation, and in the ridlous schemes he es up with, against Sean's better judgement. With Sean's help, Min negotiates life as the youngest in a chaotic, scatter-brained family.