This is the 8639th most frequent Dutch word.
ien
"ien" is a dialect or informal variation of the Dutch word "één," meaning "one."
In this sentence, 'ien' is used colloquially in some Dutch dialects to mean 'someone'.
Ik kan het niet alleen, ik hoop dat ien mij helpt.
I can't do it alone, I hope that someone helps me.
Here, 'ien' is used as a specific numeral representing 'one'.
Ien van de mensen hier heeft mij geholpen.
One of the people here helped me.
In this context, 'ien' refers generally to an unidentified person, akin to 'someone'.