"Hey! Bumboo" is a comedic anime series centered around the misadventures of Bumboo, a mischievous and anthropomorphic panda who becomes an unexpected addition to the lives of the Yamada family. The story begins when Bumboo, a wandering and carefree panda, stumbles upon the Yamada household and decides to stay, much to the initial dismay of the family. Despite his lazy and gluttonous tendencies, Bumboo’s antics often lead to humorous and chaotic situations that disrupt the otherwise ordinary lives of the Yamadas.

The Yamada family consists of the hardworking and often exasperated father, Shigeo, who struggles to maintain order in the household; the kind-hearted but easily flustered mother, Tamako; and their two children, the studious and responsible teenage daughter, Yuriko, and the mischievous young son, Takashi. Each family member reacts differently to Bumboo’s presence, with Shigeo frequently frustrated by his laziness, Tamako trying to accommodate him, Yuriko finding him both annoying and endearing, and Takashi viewing him as a fun companion.

Throughout the series, Bumboo’s antics range from eating copious amounts of food and napping in absurd places to inadvertently causing trouble in the neighborhood. Despite his selfish behavior, Bumboo occasionally shows moments of unexpected kindness and loyalty, which endear him to the family over time. The episodic nature of the series highlights the comedic interplay between Bumboo and the Yamadas, as well as their interactions with eccentric neighbors and friends, such as the nosy Mrs. Kobayashi and the quirky local shopkeeper.

The humor in "Hey! Bumboo" derives from the contrast between Bumboo’s carefree, animalistic behavior and the Yamadas’ attempts to maintain a semblance of normalcy. The series balances slapstick comedy with lighthearted moments, often emphasizing the absurdity of everyday situations. While Bumboo’s presence is a constant source of chaos, it also brings the family closer together as they navigate the challenges and laughter he brings into their lives.