WNBA San Antonio Stars / Las Vegas Aces (2017–2024) in 2019 Plum was selected as the first pick of the
2017 WNBA draft by the
San Antonio Stars. This marked the first time in history that the first overall pick from the
NBA (
Markelle Fultz) and the WNBA came from the same school (
University of Washington) in the same year. Plum made her career debut on May 25, 2017, against the
Dallas Wings, she scored four points along with one assist off the bench in a 94–82 loss. On August 5, 2017, Plum scored a career-high 23 points in an 87–80 overtime win against the
Seattle Storm. By the end of the season, Plum averaged 8.5 ppg and was voted on the All-Rookie Team, but the Stars finished with the second worst record in the league. In 2018, the San Antonio Stars relocated to
Las Vegas, Nevada, and were renamed the
Las Vegas Aces. In the 2018 season, Plum improved in every statistical category, averaging more points, rebounds and assists with higher shooting percentages. This helped the Aces improve overall from the previous season but they fell short of a playoff spot as they finished ninth place with a 14–20 record (6 wins better than the 2017 season). In 2019, the Aces would finish the season as the number four seed with a 21–13 record, making the playoffs for the first time since 2014. They would receive a bye to the second round. In the playoffs, Plum would step up on the offensive end, averaging double-digits in ppg for the entire Aces playoff run. In the second round elimination game, the Aces defeated the
Chicago Sky 93-92 off a desperation half-court game winner by teammate
Dearica Hamby who came up with a steal on defence in the final 10 seconds of the game. In the semi-finals, the Aces would lose in four games to the
Washington Mystics, who ended up winning the championship. On May 15, 2020, Plum signed a two-year extension with the Aces worth $350K. In early June, 2020, she suffered an injury to her Achilles tendon. Due to the injury and the surgery to repair it, she missed the 2020 season. Without Plum, the Aces were 18–4 in the shortened 22-game season with the number 1 seed. They would advance all the way to the Finals but fell short by losing to the
Seattle Storm in a three-game sweep. In 2021, Plum came off the bench and had a career year averaging 14.8 points, 3.6 assists, 2.5 rebounds, and 1.0 steals on 38.6% from the three and 94.4% from the free throw line. Plum ended the month of September averaging 21.7 points, 3.2 assists, and 1.5 steals, and was named Western Conference Player of the Month. Plum was finally healthy and had a career revamp season coming off the bench winning the
WNBA Sixth Player of the Year and finished second in the
WNBA Most Improved Player voting. In 2022, Plum in a now starting role averaged a new career high in points, assist, and rebounds. 20.2 points, 5.1 assists, and 2.7 rebounds on 42% from three and 46% from the field. On June 22, Plum was announced to her first All-Star team as well as being voted a starter for the All-Star Game. She then signed a two-year contract extension with Las Vegas worth $185k for one year and $200k the other year. On July 10, she scored 30 points in the All-Star Game en route to being named
the game's MVP. She grabbed Western Conference Player of the week two times for the weeks of May 30-June 5 and July 28-July 31. Plum would go on to help the Aces to their second finals appearance and win their first championship in franchise history.
Los Angeles Sparks (2025–present) On January 31, 2025, Plum was involved in a three-team trade between the Las Vegas Aces, the
Los Angeles Sparks, and the
Seattle Storm, which resulted in Plum being traded to the
Los Angeles Sparks for the
2025 season. On April 12, 2026, Plum re-signed with the Sparks on a one-year, $999,999 contract.
KBSL Fenerbahçe In 2017, Plum signed with
Fenerbahçe of the
Women's Basketball Super League (KBSL) in Turkey for the 2017–18 season. During her first stint with the team, Plum would help the team win the KBSL championship title. She returned with Fenerbahçe for the
2018–19 season, helping the team win another KBSL championship and the
Turkish Women's Basketball Cup.
Galatasaray On 15 January 2022, she signed with
Galatasaray of the KBSL. In 6 games in the KBSL, she averaged 26.5 points, 4.3 rebounds and 4.8 assists.
Unrivaled On July 15, 2024, it was announced that Plum would appear and play in the inaugural season of
Unrivaled, a new women's 3-on-3 basketball league founded by
Napheesa Collier and
Breanna Stewart. In late November 2024, Plum announced via social media that she would no longer be playing in the
2025 Unrivaled season and instead would "take some more time for myself this offseason." On November 5, 2025, it was announced that Plum had been drafted by
Phantom BC for the
2026 Unrivaled season. ==National team career==