Watch Online Free on Watchseries. Hello Strangers' is TXT's original content that depicts the struggles of boys who leave their safe haven and face the conflicts and crises of the past. Based on the narrative of their fourth full-length album 'The Star Chapter: Together', which will be released on the 21st. The production was participated by Jeon Hyo-jin, the writer of the mystery variety show 'Crime Scene' series, the writers of Netflix's new 'Crime Scene Zero', and the filming team of 'Physical: 100'.