Highly rated striker Claire Messent (23) and midfielder Stacia Joseph (23) will join the Storm for the campaign which begins with a match against Midlands in Auckland on September 19.
Messent has four caps for Australia and is regarded as an outstanding prospect.
Messent and Joseph play for the Victorian Vipers and are in the Australian development side.
Marlborough defender Sara Scott (26) also joins the Storm.
The Storm has struggled over the past four years and avoided its fourth consecutive wooden spoon only with a 2-1 victory over Auckland in its final match last season.
But with some good recruiting, and a promising showing against Canterbury in a pre-season game, coach Mark Smithells is hopeful his side will improve.
"There are no easy games in the league but my aim is to lift the bar," Smithells said.
The Storm had fallen into the trap of trying to avoid finishing last rather than going out to win games in the past, but would adopt a more aggressive approach, he said.
"Southern teams in the past have had a lot of narrow losses and not quite got there. We intend to score more goals. I'd rather lose 8-6 than 2-1 and say we held them out.
"We've got a really feisty, talented forward line and I've picked some very athletic players this year. I think we've got the right blend of youth and experience."
Experienced defender Vicky Clarke returns.
The 27-year-old captain will shoulder extra duties, including filling the role of team physio and assistant coach.
Classy centre half Erin Smyth is a key player for the Storm and will link the defence and attack end, and defender Larissa Wall returns after a two-year absence.
In the loss column, defenders Lydia Cooke and Maddie Wright are taking the season off, and veteran striker Jess Bagley has moved to Auckland.
The Storm travelled to Christchurch for a pre-season tournament in the weekend and performed well against Canterbury, despite losing 1-2.
Smithells said the Storm was able to create goal-scoring opportunities, rattling the talented Cantabrians.
While it could not finish most of its opportunities it was pleasing to see the team play attacking hockey, he said.
But the Storm was well beaten by the Australian Sports Institute side.
The Australians, made up of the best 15- to 18-year-olds, outclassed the Storm 5-1.
The sides met again last night at the McMillan Turf in Dunedin and again the Storm were outmatched losing 8-0.
They will play again tonight.
"We hope to close the gap but they are an outstanding side. They are the cream of the crop," Smithells said.
He was hoping the return of three of the team's draft players would lift the southern side.
