Two kind brothers, nine-year-old Diarmuid and seven-year-old Eoghan, rescue the cats Smig, Ebi, Trig and Róisín and the dog, Mags, and persuade their parents to take them all into their home.
The animals do not like each other at first, but eventually Mags persuades the cats to abandon their differences and unite together to form The She Team. Her encouraging words, “Don’t get mad, get even!” convince them that they will work together to stop their tormentors from hurting other animals. They are confident that their superpowers will help them achieve their goal.