"Please Save My Earth" is a science fiction and psychological drama anime series based on the manga by Saki Hiwatari. The narrative intertwines past and present through the lives of a group of individuals who discover they are the reincarnations of a team of scientists stationed on the moon to observe Earth. The story begins with Alice Sakaguchi, a young girl with telepathic abilities, who starts experiencing vivid dreams of life on the moon. These dreams reveal the existence of a group of scientists, including Rin Kobayashi, Mokuren, and Shion, who were part of an alien observation mission.

As Alice delves deeper into her dreams, she encounters other individuals who share similar memories, including Jinpachi Nogami, Issei Hoshino, and Haruhiko Kurosaka. Together, they piece together their shared past, uncovering the complex relationships and tragic events that unfolded during their previous lives. The central conflict revolves around Shion, who harbors a deep resentment toward Earth and its inhabitants due to the loss of his beloved Mokuren. In their past lives, Shion's unrequited love for Mokuren and his jealousy of Rin led to a catastrophic betrayal, resulting in the deaths of the entire team.

In the present, Shion's reincarnation, Haruhiko, struggles with the lingering emotions and memories of his past self, which threaten to consume him. The group must confront their shared history and the unresolved tensions that continue to haunt them. Alice, as the reincarnation of Mokuren, becomes a focal point in the struggle to reconcile the past and prevent further tragedy. The narrative explores themes of identity, reincarnation, and the enduring impact of past actions on the present.

The series balances its science fiction elements with a strong focus on character development and emotional depth. The interactions between the characters are driven by their shared memories and the lingering consequences of their past lives. The story builds toward a resolution that seeks to heal the wounds of the past while addressing the moral and ethical dilemmas faced by the characters. "Please Save My Earth" is a thought-provoking exploration of the connections between past and present, blending psychological drama with science fiction to create a compelling narrative.