The episode begins with Senku and his friends in the midst of their ambitious project to create electricity. They are in the process of gathering materials to build a power generator. Senku explains the importance of electricity in advancing their civilization, emphasizing that it will be the key to unlocking further technological advancements. The group is excited but aware of the challenges ahead.

As they work, Senku and his team, including Taiju and Yuzuriha, discuss the need for a power source. They decide to create a hydroelectric generator, which requires a water source and a turbine. Senku's scientific knowledge shines as he outlines the steps needed to construct the generator, and the team begins to gather the necessary materials from their surroundings.

Meanwhile, Chrome, who has been working on his own experiments, is eager to contribute. He approaches Senku with a newfound understanding of science, showcasing his growth and determination to help. Senku acknowledges Chrome's progress and encourages him to assist in the project. This moment highlights the bond between the characters and their shared goal of rebuilding civilization.

The team sets out to find a suitable location for their hydroelectric generator. They trek through the forest, discussing the potential sites and the challenges they might face. During their journey, they encounter obstacles, including rough terrain and the need to transport heavy materials. The camaraderie among the group is evident as they support each other, showcasing their teamwork and determination.

Once they find a suitable river, Senku explains the mechanics of how the hydroelectric generator will work. He details the process of converting kinetic energy from flowing water into electrical energy. The group listens intently, absorbing the information and feeling inspired by the possibilities that electricity could bring to their world.

As they begin construction, the team faces setbacks. They struggle with the assembly of the turbine and the generator components. Frustration mounts, but Senku remains focused and encourages his friends to persevere. He emphasizes the importance of trial and error in scientific endeavors, motivating the team to keep pushing forward despite the difficulties.

In a pivotal moment, the team successfully assembles the generator. They connect it to the water source and prepare for the first test run. The atmosphere is tense with anticipation as they gather around, hoping for success. Senku counts down, and when they activate the generator, it initially sputters and fails to produce electricity. The disappointment is palpable, but Senku quickly reassures everyone that failure is part of the process.

Determined to succeed, Senku and the team troubleshoot the generator. They identify the issues and make adjustments, demonstrating their problem-solving skills and teamwork. After several attempts, they finally manage to generate a small amount of electricity. The moment is filled with joy and excitement as they witness the first sparks of energy, symbolizing a significant step forward in their quest to rebuild civilization.

The episode concludes with the team celebrating their achievement. They reflect on the progress they have made and the potential that electricity holds for their future. Senku's vision of a new age powered by science and technology begins to take shape, leaving the group motivated and eager to continue their journey toward rebuilding humanity.

In the ending of "Dr. STONE" Season 1, Episode 20, titled "The Age of Energy," Senku and his friends successfully create a power source using a steam engine, marking a significant step towards rebuilding civilization. They demonstrate the steam engine's functionality, showcasing their progress in science and technology. The episode concludes with the group feeling a renewed sense of hope and determination as they look forward to the future.

As the episode unfolds, we begin with Senku and his team, who are deep in the process of constructing a steam engine. The atmosphere is charged with excitement and anticipation as they gather materials and tools necessary for their ambitious project. Senku, driven by his passion for science and the desire to restore humanity, meticulously explains the principles of the steam engine to his friends, including Taiju and Yuzuriha. His enthusiasm is infectious, and the team rallies around him, eager to contribute.

Scene by scene, we witness the challenges they face. The group works tirelessly, gathering resources from their surroundings. They encounter obstacles, such as the need for precise measurements and the right materials, but Senku's unwavering determination keeps them focused. Each member of the team plays a crucial role: Taiju's strength is vital for heavy lifting, while Yuzuriha's attention to detail ensures that everything is crafted with care.

As the steam engine begins to take shape, the tension builds. The team is aware that this invention could change everything for their new world. They are not just building a machine; they are reigniting the spark of human ingenuity. The emotional stakes are high, as each character reflects on what this means for their future. Senku, in particular, feels the weight of responsibility, knowing that the success of the steam engine could lead to a new era of technology and progress.

Finally, the moment arrives when they are ready to test the steam engine. The scene is filled with suspense as they prepare for the first run. Senku's heart races with anticipation, and his friends share in his excitement. With a deep breath, Senku activates the engine, and to their amazement, it roars to life, producing steam and power. The joy and relief wash over the group as they realize that their hard work has paid off. This moment symbolizes not just a technological breakthrough but also the resilience of the human spirit.

As the episode draws to a close, the characters stand together, looking at the steam engine with a sense of accomplishment. They are filled with hope for the future, ready to face whatever challenges lie ahead. Senku's dream of rebuilding civilization is one step closer to reality, and the bonds between the characters have strengthened through their shared journey. Each character, from Senku to Taiju and Yuzuriha, feels a renewed sense of purpose, united in their quest to restore humanity to its former glory. The episode ends on a hopeful note, emphasizing the power of teamwork, innovation, and the enduring spirit of humanity.

In "Dr. STONE" Season 1, Episode 20 titled "The Age of Energy," there is indeed a post-credit scene.

As the episode concludes, the scene shifts to a serene setting where Senku Ishigami and his friends are seen working on their next big project. The atmosphere is filled with excitement and determination as they discuss the potential of harnessing electricity. Senku, with his characteristic enthusiasm, explains the importance of energy in advancing their civilization.

The camera then pans to a close-up of a small, makeshift generator they have created, showcasing the ingenuity and resourcefulness of the group. The scene captures the flickering light of a bulb powered by their efforts, symbolizing hope and the dawn of a new era in their stone world.

This moment encapsulates the theme of progress and innovation that runs throughout the series, highlighting the characters' relentless pursuit of knowledge and their desire to rebuild society. The post-credit scene leaves viewers with a sense of anticipation for the technological advancements that are yet to come, reinforcing the idea that they are on the brink of a new age powered by science and teamwork.

In this episode, Chrome plays a significant role as Senku's assistant. He helps gather materials and shows his growing understanding of science, demonstrating his enthusiasm and determination to learn from Senku.

In episode 20, titled 'The Age of Energy', Senku focuses on creating a power source to advance their civilization. He works on building a battery using materials like sulfuric acid and lead, which are crucial for generating electricity.

Senku plans to generate electricity by constructing a hydroelectric power generator. He explains the process of using water flow to turn a turbine, which will then produce energy for the village.

The episode highlights the ideological conflict between Senku and Tsukasa. While Senku is focused on rebuilding civilization through science and technology, Tsukasa represents a more primal approach, believing in a world without modern technology.

Senku and his team face several challenges, including sourcing the right materials and ensuring the generator is built correctly. They also deal with the pressure of time, as they need to demonstrate their progress to gain the support of the villagers.

In "Dr. STONE" Season 1, Episode 20, titled "The Age of Energy," there are a few elements that may be considered potentially objectionable or upsetting for children or sensitive viewers:

1. Violence: There are scenes depicting conflict and physical confrontations, which may be intense for younger viewers.

2. Destruction: The episode includes imagery of destruction and the aftermath of a world that has been drastically changed, which could be unsettling.

3. Emotional Struggles: Characters experience moments of frustration, despair, and determination, which may resonate deeply and evoke strong emotions.

4. Scientific Concepts: Some discussions around scientific processes and experiments may be complex and could confuse younger audiences.

Overall, while the show is generally suitable for a family audience, these elements may require parental guidance for younger viewers.