"One Plus One" follows the story of Jess, a single mother facing numerous challenges, including financial struggles and her children's issues. The plot thickens when she finds money that doesn't belong to her and meets Ed, who helps her family despite their complicated past.

The central characters in "One Plus One" are Jess, a determined single mother; her stepson, who is being bullied; her daughter, who has a unique opportunity; and Ed, a man with his own problems who becomes an unexpected ally to Jess and her family.

"One Plus One" explores themes such as family and sacrifice, moral dilemmas, and redemption and forgiveness. It highlights the lengths a mother will go to for her children, the ethical challenges of making difficult choices, and the possibility of personal growth through forgiveness.