While combing through the belongings of his recently deceased aunt, Matsuko, nephew Sho pieces together the crucial events that sank Matsuko's life into a despairing tragedy.

When two souls find one another, nothing can tear them apart. Widower Takumi lives a quiet life with his six-year-old son Yuji after the loss of wife and mother Mio. Yuji unfailingly remembers her promise to him: "I'll be with you again in a year's time, when the rains come." On the first anniversary of her passing, Takumi and Yuji are taking a walk in the woods when they come across a woman sheltering from a monsoon downpour.

Former college buddies Horaguchi and Okawa suddenly reunite on a whim after 15 years apart and try to resume their friendship by planning a trip together. Meanwhile, Okawa’s live-in girlfriend Kaede and the pair's old friend Kyoko get roped into joining them. Soon, the four head off on a trip together with the goal of sharing sukiyaki by the sea.

A single woman runs a rent-a-cat service to provide companions for lonely people.

A series of grotesque murder cases takes place on rainy days. Detective Hisashi Sawamura (Shun Oguri) works to catch the murderer like he has done with past cases, but he soon realizes the murderer's next target is his wife and son. A man in a frog mask is a suspect.

An unknown accident occurs in Tokyo Bay's Aqua Line, which causes an emergency cabinet to assemble. All of the sudden, a giant creature immediately appears, destroying town after town with its landing reaching the capital. This mysterious giant monster is named "Godzilla".