Magpies No 8 Marino Mikaele-Tu'u took the field as a 57th minute replacement. He was a busy defender and thirsty for work on attack - proof he is well and truly over the injuries which nagged him during the Oceania tournament.
"We are really happy to come out with this first win and to get the bonus point. We learnt from last year how important bonus points are in this tournament," New Zealand captain and No 8 Luke Jacobson said.
"I was pleased with the way we attacked them in their half and put them under a lot of pressure. A key work-on for us will be discipline. We gave away far too many penalties which put us under the pump and they got a few good lineout drives on us, too,
Another work-on for the Craig Philpott-coached team will be to increase the patience levels.
"I'm really proud of the boys. I think we showed a really spirited performance and that we are ready to compete at this level. I think a lot of people wrote us off before the game, but we were right up there for 50 minutes," Scotland captain Callum Hunter-Hill said. "We just need to be clinical and composed when we get opportunities and put in a complete 80-minute performance."
The other pool B match saw Italy, who the Baby Blacks meet on Sunday night, upset Ireland 22-21. In pool A England walloped the ex-Magpie Mo Schwalger-coached Samoa team 74-17 and Australia beat Wales 24-17.
Pool C battles saw South Africa and France draw 22-all and Argentina beat Wales 24-17.
Scorers:
New Zealand 42 (Tima Faingaanuku 3, Dalton Papali'i, Orbyn Leger, Asafo Aumua tries; Tiaan Falcon 3 cons, 2 pens), Scotland 20 (Darcy Graham, Fraser Renwick, Josh Henderson tries; Henderson con; Connor Eastgate pen). HT: 19-10.