As an amateur Caleb won numerous tournament titles while compiling a record of 97 wins with 20 defeats.

Plant won his next two fight against Jamar Freeman and Tyrone Brunson by decision, before scoring another two knockouts against Adasat Rodriguez and Carlos Galvan.

[14] In his 18th professional fight, Plant was scheduled to challenge the reigning IBF super middleweight champion José Uzcátegui, on January 13, 2019.

Plant was the IBF mandatory, having earned the right to challenge for the title after defeating Rogelio Medina by unanimous decision.

While Plant was recovering from his injury, Uzcátegui beat Ezequiel Maderna by unanimous decision, in a non-title bout contested on September 28, 2018.

Sticking to his outfighting gameplan, Plant remained dominant until the ninth round, during which he was staggered by a short uppercut from Uzcátegui.

Lee had spent his career competing at light-heavyweight, but moved down to super middleweight to challenge for his first world championship.

[23] Plant completely dominated his opponent throughout the bout, earning a technical knockout victory midway through the third round.

[25] For his second title defense, Plant fought the #3 ranked IBF super middleweight and mandatory challenger Vincent Feigenbutz, on February 15, 2020.

Referee Malik Waleed finally stepped in at the 2:23 minute mark of the tenth round, deeming Feigenbutz unable to continue intelligently defending himself.

[30] Plant made his third title defense against the former IBF super middleweight titleholder Caleb Truax, on January 30, 2021.

However, many fans expressed their disappointment with the match-up, as it was expected that Plant would fight Canelo Álvarez in a super middleweight title unification bout.

[34] Plant fought the reigning WBA (Super), WBC, WBO and The Ring super middleweight champion Canelo Álvarez in a title unification bout on November 6, 2021, at the MGM Grand Garden Arena in Paradise, Nevada, United States.

[36] Plant lost the bout via eleventh-round technical knockout losing the IBF title, with the loss also being the very first in his professional career.

[41][42] Plant was booked to face the former two-time WBC super middleweight champion Anthony Dirrell in a WBC super middleweight title eliminator, on the undercard of the Deontay Wilder vs. Robert Helenius heavyweight bout, which took place at the Barclays Center in New York City.

[45] The fight was scheduled as the main event of a Showtime pay-per-view, which took place on March 25, 2023, at the MGM Grand Garden Arena in Las Vegas, Nevada.

Despite starting off the fight fast, Benavidez found a way back and Plant was heavily stunned and hurt near the end of the bout.

[46] Plant was set to face Trevor McCumby for interim WBA super middleweight title at T-Mobile Arena in Las Vegas on September 14, 2024.

Alia died in January 2015, at the age of 19 months after she caught a respiratory infection which developed to pneumonia.