In a serene seaside town, a boisterous and kind-hearted woman lives with her reserved daughter, Kikuko. Known for her loud laughter and tireless energy, the mother constantly embarrasses Kikuko with her eccentric tendencies and endless optimism. Despite their differences, they share a strong bond, tied together by the love and challenges of their unconventional life. The mother's past is filled with heartache and setbacks, but she faces each day with unwavering positivity, aiming to provide Kikuko with a life full of joy. As Kikuko navigates her own coming-of-age journey, she deals with the usual teenage angst of school pressures, friendships, and self-discovery, while grappling with her contrasting family life. She admires her mother's resilience yet struggles with the social stigma it brings.

Amidst the ups and downs, the small family faces situations that test their resilience and ability to understand each other. Kikuko begins to uncover secrets from her mother's past, shedding light on the reasons behind her decisions and outlook on life. These revelations force Kikuko to confront her own feelings of embarrassment and admiration, learning valuable lessons about acceptance and the strength found in vulnerability. Through unexpected interactions and surprising turns, both mother and daughter realize the importance of embracing one's true self and find happiness in their own unique way. Their heartwarming tale of love, laughter, and growth transcends individual differences, illustrating that life's unpredictability can forge deep connections and lead to profound understanding between even the most disparate of personalities.