Ep 1. Rock by Rock

The show Greenhouse Academy follows the lives of students at an elite boarding school for the academically gifted and talented. Season 4 starts off with the first episode named "Rock by Rock". The episode begins with the two main characters, Hayley and Leo, waking up to start their new day at the Greenhouse Academy. They quickly realise that their school year is going to be quite different from the previous ones.

The academy is still recovering from the catastrophic events of last season and everything is still in disarray. The two friends are now seniors and are determined to make the best of their final year. They are both confident and eager to take on any challenges that come their way.

As the episode progresses, we see the students preparing for their senior project, which will determine their final grades. The project requires the students to conduct a science experiment using the technology provided to them at the academy. Hayley and Leo are paired up with different partners for their projects. Hayley works with Brooke while Leo works with Aspen.

Hayley's project is focused on creating an environmentally friendly rock stabiliser which can prevent landslides. Hayley thinks that her project will have a significant impact on the environment. However, her project creates conflict with the school's headmaster who believes that her experiment could cause more harm than good.

Leo's project on the other hand, is focused on developing a system for predicting earthquakes. His project is highly technical and requires a lot of research and experimenting. Leo's partner, Aspen, who is an expert in geo-engineering, is the perfect fit for his project, and the two of them make great progress.

Meanwhile, the junior class is introduced to a new transfer student, who has his own set of challenges. Daniel, a student from Brazil, is shown to be struggling in his classes and needing help. His teachers and classmates are quick to help him catch up, as they want him to succeed.

As the episode comes to an end, tension builds between Hayley and the headmaster over her project, which is causing harm to the academy's ecosystem. Leo and Aspen make a breakthrough in their project, which has the potential to make a huge impact on earthquake prediction.

Overall, the first episode of Greenhouse Academy Season 4 sets the tone for the rest of the season. The episode is filled with interesting science experiments and shows how the students are trying to make a positive impact on the world. The characters' determination and resilience shine through despite the obstacles they face. It's an episode full of suspense, drama, and hope for what is to come in the story.