Manhole

On the day before Shunsuke Kawamura's wedding, his colleagues hold a surprise party for him. On his way home from the party, Shunsuke falls into a deep manhole. When he wakes, trapped and horrified by incidents one after another, he gets desperate to escape and uses his only reliable tool, his smartphone. The clock ticks mercilessly and the morning is nearing. Can the groom get out of the hole intact and get married to continue with his successful life?