'To The Moon and Back' follows the POstables - Oliver, Shane, Rita, and Norman - tasked with delivering a lost letter they find at a Denver Cafe, formerly a nightclub called Starmakers. The letter, filled with personal reflections and cryptic phrases like “Tell It to The Moon", leads them to Nate Holloway, a famous singer-songwriter. He reveals his big hit was written by his former partner, Tracy Reo, a talented but reclusive songwriter who disappeared years ago. The POstables track Tracy’s whereabouts, discovering she has been living under an assumed name to hide from a troubled past.
Meanwhile, Oliver grapples with revelations from old letters, as he discovers new information about his birthfather, stirring doubts about his own identity. Faced with a difficult decision, Oliver is forced to confront his beliefs about family, loyalty, and moral integrity.