In addition to Kungälvs HK, 11 other teams from 6 different countries played in Girls 21. They were divided into 2 different groups, whereof Kungälvs HK could be found in Group 1 together with Zimbabwe National Team (OS), Team X-Treem, USA National Team (OS), Torslanda HK 2 and IK Sävehof. Kungälvs HK made it to B-Play-off after reaching 5:th place in Group 1. Once in the playoff they made it all the way to the Final, but lost it against Torslanda HK 2 with 10-15. Thereby Kungälvs HK finished second in G21 B-Play-off during Partille Cup 2013.