On the scorchingly hot streets of Prague, Lumikki Andersson is recovering from the trauma back home in Finland that left her near dead in the snow. Now she's alone again, which is exactly how she likes it. But when a nervous young woman named Lenka approaches Lumikki claiming to be her long-lost sister, the peaceful solitude is shattered. Lumikki needs to find out more, but after she meets Lenka's unusual 'family', soon she is fighting for her life again - and, possibly, for her sister's too.