In 1980s Singapore, eleven-year-old Syafiqah (Nameera Ashley) enters a harsh institution, befriending bullied outcast Huat (Cai Chengyue). Seeking refuge in giant storm drains, the children forge a fragile fantasy world. As the heavy monsoon rains intensify, a solemn vow of secrecy forces Syafiqah into an unexpected, daunting quest for independence well beyond her years.