Koho and ID verification

( I'm not gonna post pictures incase I'm wrong ) so my buddy I've know for at least 20 years messages me a couple years ago and says he's working up north and his grandma is sending him a cheque but he banks with koho and can't deposit, says if I deposit it for him he'll hook me up with a couple hundred , I said I can't because I used to put in bad cheques and take out cash when I was young and dumb , I paid my dues but I gotta see a teller every time , couple years goes by and he messaged me again asking how I'm doing blah blah ... Said he bought a house , having a house warming party I should join ( I live in a different province now ) says he forgot his ID verification is not working and if me or my wife can help him , I said I can't .

Where's the scam I can't see it .