The episode opens with a time jump of fifty years after the first alien guest left the Gingarou Hotel. Yachiyo, the android manager, is overjoyed to witness another alien ship crash-landing in Ginza. The new occupants are the Procione family, a group of tanuki-like alien creatures who become the hotel's guests.

Yachiyo welcomes the Prociones warmly and serves them the usual hotel menu, which has remained static due to limited ingredient availability. However, the Prociones soon grow tired of the repetitive dishes. Determined to keep her guests happy, Yachiyo decides to venture outside the hotel to procure new ingredients. She takes Ponko, a small companion, with her into the wilderness to fish.

While fishing, Yachiyo and Ponko are suddenly attacked by a giant alien worm known as a Nudel. The Environment Checker Robot, which had earlier detected the Nudel, arrives to rescue them. They take shelter in a nearby building where Ponko explains that the Nudel is an invasive alien creature that destroys any planet it lands on.

Unwilling to let Earth be destroyed, Yachiyo, Ponko, and the Environment Checker Robot decide to kill the Nudel. The Environment Checker's cannon cannot penetrate the Nudel's tough skin. Yachiyo then devises a plan to use a construction crane to "fish" the Nudel by baiting it with Ponko. She maneuvers the crane hook to impale the Nudel's head, killing it. The plan nearly fails when Yachiyo runs out of power, but they resolve this by using a spare battery they had brought along.

After killing the Nudel, Yachiyo and Ponko harvest its meat and serve it to the Prociones, who declare it delicious. This new ingredient refreshes the hotel menu and pleases the guests.

The Prociones, however, begin to behave badly, causing damage to the hotel by defecating in the hallways and messing up chandeliers and furniture. Yachiyo reaches her limit and confronts the Prociones, even physically striking the father figure in the family to assert control and defend the hotel's dignity.

Despite their misbehavior, the Prociones show earnestness in their apologies and start cleaning the hotel themselves. Yachiyo is initially taken aback by this gesture, as she believes in maintaining a clear boundary between staff and guests. However, their efforts soften her stance.

By the end of the episode, the Prociones are integrated into the hotel staff, helping maintain the hotel and earning their place there. The episode closes with a fireworks display, a posthumous reward from Gingarou's original owner, symbolizing a moment of celebration and acceptance.

In a post-credits scene, it is revealed that a human found by the Prociones is dead, but it remains unclear whether humanity as a whole is extinct or if some humans have spread beyond Earth. This deepens the mystery of how the aliens keep finding the hotel and what the future holds for the remnants of civilization.

The episode ends with Yachiyo confronting the troublesome Tanuki family guests after 50 years of waiting for new visitors. After a tense and chaotic interaction where the Tanukis cause havoc in the hotel, Yachiyo finally loses her composure and punches the father. Despite the conflict, the Tanuki family begins to help clean the hotel themselves, softening Yachiyo's stance. The episode closes on a note of mutual respect and uneasy coexistence between Yachiyo and the Tanukis.

In the final scenes of Apocalypse Hotel Season 1, Episode 3, titled "A Smile Is the Ultimate Ambiance," the story unfolds with Yachiyo still managing the hotel after a long wait of 50 years for new guests. The arrival of the Tanuki family, who claim to be the only guests, quickly turns problematic. The Tanukis behave badly, defacing the hotel by leaving feces in the hallways and damaging chandeliers and furniture. Yachiyo, who has been patient and dedicated to her role as the hotel's caretaker, reaches her breaking point. In a rare display of anger, she punches the Tanuki father in the face, an act that symbolizes her frustration with the guests who disrespect the hotel and her efforts.

Despite this confrontation, the episode does not end in outright hostility. The Tanuki family, recognizing the damage they have caused, begin to take responsibility by cleaning the hotel themselves. This gesture surprises Yachiyo and softens her attitude toward them. She realizes that while the guests can be difficult, there is room for compromise and mutual respect. The episode highlights the delicate balance Yachiyo maintains between serving guests and preserving the hotel's dignity.

The fate of the main characters at the episode's end is as follows:

• Yachiyo remains the steadfast manager of the Apocalypse Hotel, still committed to her role but now more aware of the challenges posed by difficult guests.
• The Tanuki family transition from disruptive guests to reluctant helpers, indicating a potential for growth and cooperation.
• Other staff and entities, such as the Environment Checker Robot, continue their duties, symbolizing the persistence of order amid chaos.

The episode closes with a tone that is both light and kind, emphasizing themes of tolerance, respect, and the complexities of hospitality in a post-apocalyptic setting. It suggests that coexistence requires effort from both hosts and guests, and that even in a world filled with strange and challenging visitors, moments of understanding can emerge.

Yes, Apocalypse Hotel Season 1, Episode 3 titled "A Smile Is the Ultimate Ambiance" has a post-credit scene. In this scene, there is a significant time jump of 50 years after the alien guest leaves the hotel. The scene reveals that despite the long passage of time, the hotel staff, including the robot manager Yachiyo, continue to maintain the hotel and await new guests. The post-credit scene shows new guests arriving, who appear to be aliens rather than humans, and hints at the mystery of how these extraterrestrial visitors keep finding the hotel. It also confirms that the human who was seen earlier is dead, but it leaves open the possibility that humanity might still exist elsewhere, possibly having spread among the stars. This scene sets a tone of ongoing mystery and anticipation about the fate of humanity and the hotel's role in this post-apocalyptic world.

1. How does Yachiyo manage to kill the invasive alien creature called the Nudel, and what role does Ponko play in this plan?
2. What new challenges do Yachiyo and the hotel staff face when trying to procure new ingredients for the Prociones guests?
3. How does Yachiyo's interaction with the Prociones guests evolve, especially after she physically confronts one of them?
4. What is the significance of the Prociones starting to clean the hotel on their own, and how does this affect Yachiyo's view of them?
5. How does the episode explore Yachiyo's limits as an android programmed for customer satisfaction, particularly in dealing with ungrateful or difficult guests?

The TV show Apocalypse Hotel, Season 1, Episode 3 ("A Smile Is the Ultimate Ambiance"), is generally a slice-of-life anime with some darker post-apocalyptic and sci-fi elements. It is not specifically designed as family-friendly content for young children.

Potentially objectionable or upsetting aspects for children or sensitive viewers include:

• Post-apocalyptic setting: The world is depicted as largely abandoned by humans due to a global catastrophe, which may be unsettling.
• Themes of societal collapse and nature reclaiming urban areas: This can create a somber or eerie atmosphere.
• Presence of extraterrestrial beings and robots: While often portrayed with humor and charm, some alien or robot designs and situations might be strange or mildly intense.
• Mild property damage and conflict: The alien guests sometimes cause damage or disruption, which leads to moments of tension.
• Dark humor and sarcasm: The show includes sarcastic and dark comedic elements that might not be suitable for very young or sensitive viewers.
• Brief scenes hinting at human extinction or dire circumstances: These are not graphic but may be emotionally heavy.

There is no indication of graphic violence, explicit content, or strong language, but the tone and themes are more suited to older children, teens, or adults who can understand and process the bittersweet and sometimes melancholic atmosphere.