A sequel to the 1990 film of the same name, a group of medical students begin experimenting with "near-death" experiences in order to see if anything lies beyond the afterlife. The group is then revisited by physical manifestations of childhood sins and past tragedies, which start to jeopardise their lives, and they are unsure if what they are facing is real or hallucination.
A man is sent to space to prevent climate-controlling satellites from creating a storm of epic proportions. Back on earth, his brother is plotting an assassination against the president.
After having done something bad, Atsuya and his two childhood friends decide to hide and stay in an old general store until dawn breaks. However, late into the night, Atsuya discovers a letter in the mailbox that is addressed to the Namiya General Store. Magically, the letter was written 32 years ago and the mailbox is somehow connected to the year 1980. Filled with curiosity, Atsuya and his friends decide to write a reply and place it in the mailbox. They soon receive a response and realise that they can communicate via the mailbox with a girl from the year 1980.