Sammy and Tom meet on a night out at karaoke and start a no-strings-attached affair for a limited time on the condition that they will never speak to each other again after three weeks.
Despite the struggles of modern dating, Sammy meets Tom. She proposes an unconventional relationship with a time constraint.
The unexpected revelation of Tom having a child proves too big an obstacle for Sammy so the pair explore other options.
Sammy is semi-recovered from the discovery of Ellie's mum and Tom's ex-wife, Gillian. Though Sammy's not quite ready to meet Ellie just yet, she is ready to meet Tom's friends. A wild night out together is just what they need for Tom to show Sammy's flatmates that he's fun too. A "dad emergency" derails the night for Tom, testing the balance between his relationship with Sammy, and his responsibilities to his daughter.
Sammy is in full 'adult mode', embracing her new role, but only in theory, not practice. Tom realises he's fallen far out of step with his former friends and tries to forge a new friendship with another dad at school. Sammy's first proper attempt at babysitting Ellie is a harsh introduction to the realities of parenting. Sammy has trouble being honest with Tom about an old flame.
It's opening night for Gillian's restaurant and nerves are high, while Raina still doesn't know about Sammy and Tom, and tonight is not the time to find out.
It is nearly Christmas and Sammy and Tom's relationship hangs in the balance. Is a big romantic gesture enough to bring them back together in time for the holidays?
